Equity and Accumulated Other Comprehensive Earnings - AOCI Activity (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance		$ 2,949
Currency translation recognized in earnings as a result of the transfer of the Argentine steel aerosol business to held for sale	$ 45		$ 45
Stockholders' Equity Attributable to Parent, Ending Balance		2,886
Settlement loss		102
Foreign Currency Translation
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance		(340)
Other comprehensive earnings (loss) before reclassifications		(293)
Stockholders' Equity Attributable to Parent, Ending Balance		(633)
Pension and Other Postretirement Benefits (Net of Tax)
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance		(558)
Other comprehensive earnings (loss) before reclassifications		(109)
Amounts reclassified from accumulated other comprehensive earnings (loss) into earnings		106
Stockholders' Equity Attributable to Parent, Ending Balance		(561)
Effective Derivatives (Net of Tax)
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance		(12)
Other comprehensive earnings (loss) before reclassifications		6
Amounts reclassified from accumulated other comprehensive earnings (loss) into earnings		45
Stockholders' Equity Attributable to Parent, Ending Balance		39
Accumulated Other Comprehensive Earnings (Loss).
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance		(910)
Other comprehensive earnings (loss) before reclassifications		(396)
Amounts reclassified from accumulated other comprehensive earnings (loss) into earnings		151
Currency translation recognized in earnings as a result of the transfer of the Argentine steel aerosol business to held for sale	$ 45		$ 45
Stockholders' Equity Attributable to Parent, Ending Balance		$ (1,155)