CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other comprehensive income (loss), net of tax
Change in fair value of hedge derivatives, tax benefit (expense)	$ 57	$ (19)	$ (12)	$ 45
Reclassification of change in fair value of derivatives to net income, tax (expense) benefit	(14)	6	(23)	2
Foreign currency translation adjustments, tax expense	0	(2)	0	(7)
Benefit plan adjustments, tax expense	$ (2)	$ (3)	$ (5)	$ (5)