Derivative Instruments and Fair Value Measurements (Details 1) (Fair Value, Measurements, Nonrecurring [Member], Finance Group [Member], Unobservable Inputs (Level 3) [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Fair Value, Measurements, Nonrecurring [Member] | Finance Group [Member] | Unobservable Inputs (Level 3) [Member]
Assets measured at fair value on a nonrecurring basis
Finance receivables held for sale, Balance	$ 318	$ 237
Impaired finance receivables, Balance	92	508
Repossessed assets and properties	74	54
Finance receivables held for sale, Gain (Loss)	24	(11)
Impaired finance receivables, Gain (Loss)	(6)	(33)
Repossessed assets and properties, Gain (Loss)	$ (16)	$ (6)