Revenues (Schedule of Remaining Unsatisfied Performance Obligations) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, cancellation period	30 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 2,000,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 713,231
Remaining performance obligation, expected timing of satisfaction period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 544,582
Remaining performance obligation, expected timing of satisfaction period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 737,106
Remaining performance obligation, expected timing of satisfaction period