Derivative Instruments and Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Assets measured at fair value on a nonrecurring basis
Number of loan categories for cash flow models based on the entity's qualitative assumptions	3
Average resolution period for loans held for sale that have defaulted	24 months
Minimum
Assets measured at fair value on a nonrecurring basis
Restructuring and resolving period for loans that have less an ability to pay	1 year
Maximum
Assets measured at fair value on a nonrecurring basis
Restructuring and resolving period for loans that have less an ability to pay	4 years
Textron Systems
Assets measured at fair value on a nonrecurring basis
Intangible assets, Gain (Loss)		$ (41)
Weighted average cost of capital (as a percent)	10.00%
Fair Value, Measurements, Nonrecurring | Finance group | Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Finance receivables held for sale, Balance	140	418
Impaired finance receivables, Balance	72	81
Other assets, Balance	76	128
Finance receivables held for sale, Gain (Loss)	76	(206)
Impaired finance receivables, Gain (Loss)	(11)	(82)
Other assets, Gain (Loss)	(51)	(49)
Fair Value, Measurements, Nonrecurring | Manufacturing group | Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Intangible assets, Balance		15
Intangible assets, Gain (Loss)		$ (41)