SHARE REPURCHASE PROGRAMS- Schedule of Activity for Shares Repurchased and Retired (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accelerated Share Repurchases [Line Items]
Stock repurchased and retired during period, shares (in shares)	0.5	1.1	2.2	2.2
Amount	$ 90	$ 141	$ 350	$ 282
2023 Anti-Dilutive Program
Accelerated Share Repurchases [Line Items]
Stock repurchased and retired during period, shares (in shares)	0.1	0.1	0.5	0.6
Amount	$ 14	$ 7	$ 82	$ 77
October 2024 Discretionary Program
Accelerated Share Repurchases [Line Items]
Stock repurchased and retired during period, shares (in shares)	0.4	0.0	1.7	0.0
Amount	$ 76	$ 0	$ 268	$ 0
October 2023 Discretionary Program
Accelerated Share Repurchases [Line Items]
Stock repurchased and retired during period, shares (in shares)	0.0	1.0	0.0	1.6
Amount	$ 0	$ 134	$ 0	$ 205
Discretionary Programs
Accelerated Share Repurchases [Line Items]
Stock repurchased and retired during period, shares (in shares)	0.4	1.0	1.7	1.6
Amount	$ 76	$ 134	$ 268	$ 205

RYDER SYSTEM INC 10-Q