Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ 381	$ 404
Other comprehensive income/(loss), net of tax:
Foreign currency translation adjustments	(790)	219
Net deferred gains/(losses) on net investment hedges	166	(14)
Amounts excluded from the effectiveness assessment of net investment hedges	5	4
Net deferred losses/(gains) on net investment hedges reclassified to net income/(loss)	(6)	2
Net deferred gains/(losses) on cash flow hedges	101	(16)
Amounts excluded from the effectiveness assessment of cash flow hedges	5	6
Net deferred losses/(gains) on cash flow hedges reclassified to net income/(loss)	(10)	(8)
Net postemployment benefit losses/(gains) reclassified to net income/(loss)	(25)	(58)
Total other comprehensive income/(loss)	(554)	135
Total comprehensive income/(loss)	(173)	539
Comprehensive income/(loss) attributable to noncontrolling interest	(11)	11
Comprehensive income/(loss) attributable to common shareholders	$ (162)	$ 528