Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	$ (497)	$ (442)	$ (294)		$ (530)
Hedge instruments			(1)		5
Defined benefit postretirement plans	(230)	(234)	(198)		(198)
Other		2	3		1
Accumulated other comprehensive loss	(727)	(674)	(490)		$ (722)
Adoption of accounting standards				$ (14)
Comprehensive (loss) income before reclassifications, Foreign currency translation adjustments	(51)	(153)	236
Comprehensive (loss) income before reclassifications, Hedge instruments	(1)	(2)	(4)
Comprehensive (loss) income before reclassifications, Defined benefit postretirement plans	(29)	(42)	(5)
Comprehensive (loss) income before reclassifications, Other	(2)	(1)	2
Comprehensive (loss) income before reclassifications, Total	(83)	(198)	229
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	(4)	5
Income taxes associated with comprehensive (loss) income before reclassifications, Hedge instruments			1
Income taxes associated with comprehensive (loss) income before reclassifications, Defined benefit postretirement plans	4	14	(1)
Income taxes associated with comprehensive (loss) income before reclassifications, Total		19
Reclassification from accumulated other comprehensive (loss) income, Hedge instruments	1	4	(4)
Reclassification from accumulated other comprehensive (loss) income, Defined benefit postretirement plans	37	8	9
Reclassification from accumulated other comprehensive (loss) income, Total	38	12	5
Income taxes reclassified into net earnings, Hedge instruments		(1)	1
Income taxes reclassified into net earnings, Defined benefit postretirement plans	(8)	(2)	(3)
Income taxes reclassified into net earnings, Total	$ (8)	$ (3)	$ (2)