Retirement Plans and Postretirement Medical Benefits (Fair Value Measurements of Plan Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 4,664	$ 4,940
United States \| Total plan assets at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	940,928	958,812
United States \| Total plan assets at fair value \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	97,055	158,047
United States \| Total plan assets at fair value \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	34,666	948,543
United States \| Total plan assets at fair value \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	805,727	45,221
United States \| Total plan assets at fair value \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	937,448	1,151,811
United States \| Money market funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Money market funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		10,461
United States \| Money market funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Money market funds \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		10,461
United States \| Equity securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Equity securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		67,945
United States \| Equity securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Equity securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		67,945
United States \| Commingled fixed income securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Commingled fixed income securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	34,618	185,212
United States \| Commingled fixed income securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Commingled fixed income securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	34,618	185,212
United States \| Government securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	97,055	158,047
United States \| Government securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	37,880
United States \| Government securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Government securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	97,055	195,927
United States \| Corporate debt securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Corporate debt securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31	498,867
United States \| Corporate debt securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Corporate debt securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31	498,867
United States \| Mortgage-backed /asset-backed securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Mortgage-backed /asset-backed securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17	39,046
United States \| Mortgage-backed /asset-backed securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Mortgage-backed /asset-backed securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17	39,046
United States \| Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,452	45,221	$ 67,256
United States \| Real estate \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Real estate \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States \| Real estate \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,452	45,221
United States \| Real estate \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,452	45,221
United States \| Buy-in annuity contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	798,275	0	0
United States \| Buy-in annuity contract \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
United States \| Buy-in annuity contract \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
United States \| Buy-in annuity contract \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	798,275
United States \| Buy-in annuity contract \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	798,275
United States \| Securities lending collateral \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Securities lending collateral \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		109,132
United States \| Securities lending collateral \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
United States \| Securities lending collateral \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		109,132
United States \| Securities lending payable
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		(109,132)
United States \| Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	466
United States \| Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(1,199)	(89,273)
Foreign \| Total plan assets at fair value
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	425,845	408,205
Foreign \| Total plan assets at fair value \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Total plan assets at fair value \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	236,517	300,295
Foreign \| Total plan assets at fair value \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	183,143	92,330
Foreign \| Total plan assets at fair value \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	419,660	392,625
Foreign \| Money market funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Money market funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	23,878	2,400
Foreign \| Money market funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Money market funds \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	23,878	2,400
Foreign \| Equity securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Equity securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,853	28,958
Foreign \| Equity securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Equity securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,853	28,958
Foreign \| Commingled fixed income securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Commingled fixed income securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	193,786	212,425
Foreign \| Commingled fixed income securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Commingled fixed income securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	193,786	212,425
Foreign \| Government securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Foreign \| Government securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		31,962
Foreign \| Government securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Foreign \| Government securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		31,962
Foreign \| Corporate debt securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Foreign \| Corporate debt securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		20,875
Foreign \| Corporate debt securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Foreign \| Corporate debt securities \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		20,875
Foreign \| Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,247	43,930	43,205
Foreign \| Real estate \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Real estate \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3,675
Foreign \| Real estate \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,247	43,930
Foreign \| Real estate \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,247	47,605
Foreign \| Buy-in annuity contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72,752	0	0
Foreign \| Buy-in annuity contract \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Foreign \| Buy-in annuity contract \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Foreign \| Buy-in annuity contract \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72,752
Foreign \| Buy-in annuity contract \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72,752
Foreign \| Diversified Growth Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	80,144	48,400	$ 0
Foreign \| Diversified Growth Funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Diversified Growth Funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign \| Diversified Growth Funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	80,144	48,400
Foreign \| Diversified Growth Funds \| Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	80,144	48,400
Foreign \| Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,589	12,644
Foreign \| Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,596	$ 2,936

PITNEY BOWES INC /DE/ 10-K