CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other comprehensive (loss) income, net of tax
Change in fair value of hedge derivatives, tax benefit (expense)	$ 17	$ (6)	$ 5	$ 39
Reclassification of change in fair value of derivatives to net income, tax benefit (expense)	1	(13)	(22)	(11)
Foreign currency translation adjustments, tax benefit (expense)	0	2	0	(5)
Benefit plan adjustments, tax expense	$ (2)	$ (3)	$ (7)	$ (8)