Quarterly report pursuant to Section 13 or 15(d)

Supplemental Cash Flow Information - Net Effects of Changes in Operating Assets and Liabilities, Net, on Cash Flows from Operating Activities (Details)

v3.21.1
Supplemental Cash Flow Information - Net Effects of Changes in Operating Assets and Liabilities, Net, on Cash Flows from Operating Activities (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Supplemental Cash Flow Elements [Abstract]    
Accounts and notes receivable $ 35,521 $ 122,330
Contract assets (62,278) 16,372
Inventories (435) (4,368)
Prepaid expenses and other current assets 9,948 84,078
Accounts payable and accrued expenses and other non-current liabilities (4,780) (110,394)
Contract liabilities (29,225) (12,886)
Other, net (8,200) (5,662)
Net change in operating assets and liabilities, net of non-cash transactions $ (59,449) $ 89,470