Derivative Instruments and Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Manufacturing Group [Member] | Carrying Value [Member]
Carrying value of financial instruments not recorded at fair value
Long-term debt, excluding leases	$ (2,348)	$ (2,328)
Manufacturing Group [Member] | Estimated Fair Value [Member]
Carrying value of financial instruments not recorded at fair value
Long-term debt, excluding leases	(2,757)	(2,561)
Finance Group [Member]
Carrying value of financial instruments not recorded at fair value
Debt	(1,837)	(1,974)
Finance Group [Member] | Carrying Value [Member]
Carrying value of financial instruments not recorded at fair value
Finance receivables held for investment, excluding leases	1,890	1,997
Debt	(1,837)	(1,974)
Finance Group [Member] | Estimated Fair Value [Member]
Carrying value of financial instruments not recorded at fair value
Finance receivables held for investment, excluding leases	1,819	1,848
Debt	$ (1,778)	$ (1,854)