Employee Benefits (Narrative Defined Contribution Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Defined Contribution Plan [Line Items]
Maximum employee contribution as a percentage of annual compensation	100.00%
Employer contributions to plans	$ 24	$ 21	$ 20
Foreign Plan
Defined Contribution Plan [Line Items]
Employer Contributions to Plan	4	4	4
Defined Contribution Retirement Plan | United States
Defined Contribution Plan [Line Items]
Employer Contributions to Plan	$ 35	$ 34	$ 32