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Basis of Presentation (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Feb. 28, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Investments		$ 68		$ 68			$ 72
Equity method investment		2	$ 2	3	$ 2
Disposed of by Sale
Debt Instrument [Line Items]
Assets held for sale						$ 13
Gain on write down of assets held for sale				2
Amount of consideration received	$ 15
Restructuring and other related charges				7
Royalty fee
Debt Instrument [Line Items]
Revenue		$ 42	$ 19	$ 76	$ 59