Equity - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
COGS	$ 2,050	$ 2,150
SGA	(844)	(807)
Interest expense	61	217
Net experience loss	(1)	(1)
Total before tax	302	221
Tax expense (benefit)	(42)	(47)
Net income	262	175	$ 695
Reclassification out of Accumulated Other Comprehensive Income
Derivative Instruments, Gain (Loss) [Line Items]
Net income	2	2
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Total before tax	1	2
Tax expense (benefit)	0	(1)
Net income	1	1
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges | Foreign currency exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
COGS	(1)	(7)
SGA	0	0
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	2	6
Reclassification out of Accumulated Other Comprehensive Income | (Gains) losses on cash flow hedges | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
COGS	0	3
Reclassification out of Accumulated Other Comprehensive Income | Amortization of postretirement and postemployment benefits
Derivative Instruments, Gain (Loss) [Line Items]
Net experience loss	1	1
Prior service cost	0	0
Total before tax	1	1
Tax expense (benefit)	0	0
Net income	$ 1	$ 1