Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring Costs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring and Related Activities [Abstract]
Restructuring costs, net	$ 8	$ 8	$ 10	$ 19
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	8	$ 8	10	$ 19
2020 Restructuring Plan
Restructuring and Related Activities [Abstract]
Restructuring costs, net			8
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net			8
Expected restructuring costs	$ 10		$ 10