Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
AOCI Attributable to Parent, Net of Tax
Beginning balance	$ 834
Other comprehensive (loss) income before reclassifications	1	$ (4)
Amounts reclassified from AOCI	6	0
Tax benefit (expense)	(1)	0
Other comprehensive (loss) income	6	(4)
Ending balance	981
Unrealized (loss) gain on sales hedging
AOCI Attributable to Parent, Net of Tax
Beginning balance	(9)	6
Other comprehensive (loss) income before reclassifications	(6)	(6)
Amounts reclassified from AOCI	5	(1)
Tax benefit (expense)	0	1
Other comprehensive (loss) income	(1)	(6)
Ending balance	(10)	0
Unrealized (loss)/ gain on forward interest rate swaps
AOCI Attributable to Parent, Net of Tax
Beginning balance	(9)	(15)
Other comprehensive (loss) income before reclassifications	5	2
Amounts reclassified from AOCI	1	1
Tax benefit (expense)	(1)	(1)
Other comprehensive (loss) income	5	2
Ending balance	(4)	(13)
Currency translation adjustments
AOCI Attributable to Parent, Net of Tax
Beginning balance	(34)	(36)
Other comprehensive (loss) income before reclassifications	2	0
Amounts reclassified from AOCI	0	0
Tax benefit (expense)	0	0
Other comprehensive (loss) income	2	0
Ending balance	(32)	(36)
Total
AOCI Attributable to Parent, Net of Tax
Beginning balance	(52)	(45)
Ending balance	$ (46)	$ (49)