Pensions and Postretirement Benefits (Details 7) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Classes and FV levels for the Global Plans' assets
Derivatives	$ 8.5	$ (4.0)
Real Estate Commingled Funds	281.2	201.7
Commingled Commodity Funds	92.1	24.8
Asset Allocation Commingled Funds and Absolute Return Commingled Funds	74.9	1.7
Guaranteed Investment Contracts	3.4	3.4
Securities on Loan	9.9	63.9
Total Investments	3,476.0	3,414.0
Other Assets [Abstract]
Global plan assets	3,488.4	3,375.9	0
Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Derivatives	8.5	(4.0)
Real Estate Commingled Funds	0	0
Commingled Commodity Funds	0	0
Asset Allocation Commingled Funds and Absolute Return Commingled Funds	0	0
Guaranteed Investment Contracts	0	0
Securities on Loan	9.7	50.7
Total Investments	1,126.8	1,324.6
Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Derivatives	0
Real Estate Commingled Funds	0	0
Commingled Commodity Funds	92.1	24.8
Asset Allocation Commingled Funds and Absolute Return Commingled Funds	74.9	1.7
Guaranteed Investment Contracts	3.4	3.4
Securities on Loan	0.2	13.2
Total Investments	2,068.0	1,887.7
Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Derivatives	0	0
Real Estate Commingled Funds	281.2	201.7
Commingled Commodity Funds	0	0
Asset Allocation Commingled Funds and Absolute Return Commingled Funds	0	0
Guaranteed Investment Contracts	0	0
Securities on Loan	0	0
Total Investments	281.2	201.7
Fair Value, Measurements, Recurring [Member]
Other Assets [Abstract]
Cash Equivalents	146.0	596.2
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Other Assets [Abstract]
Cash Equivalents	146.0	596.2
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Other Assets [Abstract]
Cash Equivalents	0	0
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Other Assets [Abstract]
Cash Equivalents	0	0
Money Market Funds [Member]
Classes and FV levels for the Global Plans' assets
Trading Account Assets, Fair Value Disclosure	176.8	139.6
Money Market Funds [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Trading Account Assets, Fair Value Disclosure	0	0
Money Market Funds [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Trading Account Assets, Fair Value Disclosure	176.8	139.6
Money Market Funds [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Trading Account Assets, Fair Value Disclosure	0	0
Comingled Collateral Held Under Securities Lending Agreements [Member]
Classes and FV levels for the Global Plans' assets
Commingled collateral held under securities lending agreements	9.4	65.0
Comingled Collateral Held Under Securities Lending Agreements [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Commingled collateral held under securities lending agreements	0	0
Comingled Collateral Held Under Securities Lending Agreements [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Commingled collateral held under securities lending agreements	9.4	65.0
Comingled Collateral Held Under Securities Lending Agreements [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Commingled collateral held under securities lending agreements	0	0
Common Stock/REIT [Member]
Classes and FV levels for the Global Plans' assets
Equity	956.7	1,262.1
Common Stock/REIT [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Equity	956.7	1,262.1
Common Stock/REIT [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
Common Stock/REIT [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
Common Stock-Loaned [Member]
Classes and FV levels for the Global Plans' assets
Equity	(9.7)	(49.5)
Common Stock-Loaned [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Equity	(9.7)	(49.5)
Common Stock-Loaned [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
Common Stock-Loaned [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
Equity Securities [Member]
Classes and FV levels for the Global Plans' assets
Equity	570.9	751.1
Equity Securities [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
Equity Securities [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Equity	570.9	751.1
Equity Securities [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Equity	0	0
US Treasury Securities [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	161.6	66.5
US Treasury Securities [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	161.6	66.5
US Treasury Securities [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
US Treasury Securities [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
Asset-backed Securities [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	584.6	438.7
Asset-backed Securities [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
Asset-backed Securities [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	584.6	438.7
Asset-backed Securities [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
US Government Agencies Debt Securities [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	(1.2)
US Government Agencies Debt Securities [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	(1.2)
US Government Agencies Debt Securities [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
US Government Agencies Debt Securities [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
Corporate Debt Securities [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	(0.2)	(13.2)
Corporate Debt Securities [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
Corporate Debt Securities [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	(0.2)	(13.2)
Corporate Debt Securities [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Fixed Income	0	0
Fixed Income Funds [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	23.2	12.5
Fixed Income	532.7	448.4
Fixed Income Funds [Member] \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	0
Fixed Income	0	0
Fixed Income Funds [Member] \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	23.2	12.5
Fixed Income	532.7	448.4
Fixed Income Funds [Member] \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	0
Fixed Income	0	0
Commercial Paper
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	2.5
Commercial Paper \| Level 1 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	0
Commercial Paper \| Level 2 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	2.5
Commercial Paper \| Level 3 [Member]
Classes and FV levels for the Global Plans' assets
Commingled money market funds	0	0
Cash and Cash Equivalents [Member]
Other Assets [Abstract]
Cash Equivalents	18.0	18.6
Receivables or Payables [Member]
Other Assets [Abstract]
Net receivables/payables related to investment transactions	4.5	9.0
Obligations Under Securities Lending Agreements [Member]
Other Assets [Abstract]
Obligations under securities lending agreements	$ (10.1)	$ (65.7)

GOODRICH CORP 10-K