Revenue (Narrative) (Details) $ in Millions	Dec. 31, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 394
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of recognition	60 months