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Revenue Recognition (Contract Liabilities) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Change In Contract With Customer, Asset And Liability [Roll Forward]    
Contract Assets, Beginning balance $ 195,598  
Contract Liabilities, Current, Beginning balance 202,965  
Revenue recognized that was included in contract liabilities at the beginning of the period (2,600) $ (9,001)
Amounts transferred from contract assets to receivables (5,655) (2,245)
Contract Assets, Ending balance 200,054 274,187
Contract Liabilities, Current, Ending balance 204,158 199,538
Short-term Contract with Customer    
Change In Contract With Customer, Asset And Liability [Roll Forward]    
Contract Assets, Beginning balance 195,598 277,734
Revenue recognized that was included in contract liabilities at the beginning of the period 0 0
Revenue recognized in the period in excess of billings 116,140 164,246
Billings arising during the period in excess of revenue recognized 0 0
Amounts transferred from contract assets to receivables (109,358) (156,805)
Other contract asset, net (2,326) (10,988)
Long-term Contract with Customer    
Change In Contract With Customer, Asset And Liability [Roll Forward]    
Contract Assets, Beginning balance 426 1,139
Revenue recognized that was included in contract liabilities at the beginning of the period 0 0
Revenue recognized in the period in excess of billings 1,757 55
Billings arising during the period in excess of revenue recognized 0 0
Amounts transferred from contract assets to receivables 0 0
Other contract asset, net (1,750) (98)
Contract Assets, Ending balance 433 1,096
Short-term Contract with Customer, Liability    
Change In Contract With Customer, Asset And Liability [Roll Forward]    
Contract Liabilities, Current, Beginning balance 202,965 194,227
Revenue recognized that was included in contract liabilities at the beginning of the period (79,792) (78,713)
Revenue recognized in the period in excess of billings 0 0
Billings arising during the period in excess of revenue recognized 78,156 82,712
Amounts transferred from contract assets to receivables 0 0
Other contract liability, net 2,829 1,312
Long-term Contract With Customer, Liability    
Change In Contract With Customer, Asset And Liability [Roll Forward]    
Contract Liabilities, Noncurrent, Beginning balance 464 822
Revenue recognized that was included in contract liabilities at the beginning of the period 0 0
Revenue recognized in the period in excess of billings 0 0
Billings arising during the period in excess of revenue recognized 0 0
Amounts transferred from contract assets to receivables 0 0
Other contract liability, net (2) (30)
Contract Liabilities, Noncurrent, Ending balance $ 462 $ 792