Acquisitions and Dispositions (Acquired Finite-Lived Intangibles Assets) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 508
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 494
Weighted Average Amortization Period	13 years 3 months 18 days
Other
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 14
Weighted Average Amortization Period	3 years 9 months 18 days