Supplemental Other Comprehensive Income (Loss) Information - Schedule of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Other comprehensive income (loss), net of tax	$ (87)	$ (189)	$ 342
Cumulative translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), Pretax	49	(233)	218
Total Other comprehensive income (loss), net of tax	27	(218)	285
Pension and other benefits
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), before reclassifications, Pretax	(204)	(21)	21
Reclassification from AOCI, Pretax	72	69	71
Other comprehensive income (loss), Pretax	(132)	48	92
Other comprehensive income (loss), before reclassifications, Net of Tax	(154)	(16)	9
Reclassification from AOCI, Net of Tax	54	54	45
Total Other comprehensive income (loss), net of tax	(100)	38	54
Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), before reclassifications, Pretax	(9)
Reclassification from AOCI, Pretax	(6)
Other comprehensive income (loss), Pretax	(15)
Other comprehensive income (loss), before reclassifications, Net of Tax	(7)
Reclassification from AOCI, Net of Tax	(5)
Total Other comprehensive income (loss), net of tax	(12)
Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), before reclassifications, Pretax		10	(25)
Reclassification from AOCI, Pretax		3	3
Other comprehensive income (loss), Pretax		13	(22)
Other comprehensive income (loss), before reclassifications, Net of Tax		8	(16)
Reclassification from AOCI, Net of Tax		2	2
Total Other comprehensive income (loss), net of tax		10	(14)
Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), Pretax	(98)	(172)	288
Total Other comprehensive income (loss), net of tax	$ (85)	$ (170)	$ 325