Intangibles Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Total annual intangible asset amortization expense
Acquired intangible assets, net of accumulated amortization	$ 21		$ 24
Accumulated amortization	115		116
Capitalized software (net of accumulated amortization)	64		69
Accumulated amortization - capitalized software	175		170
Total intangible assets, net	1,914		2,002
Amortization of Intangible Assets	45	$ 48
Rexam
Total annual intangible asset amortization expense
Acquired intangible assets, net of accumulated amortization	1,829		1,909
Accumulated amortization	591		$ 567
Amortization of Intangible Assets	$ 37	$ 40