Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2017	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020
Joint Ventures
Redeemable noncontrolling interest	$ 675,283		$ 677,829
Assets:
Cash and cash equivalents	991,471		394,028	$ 417,544	$ 472,246
Accounts receivable	287,572		297,209
Other current assets	95,740		104,112
Property, plant and equipment, net	3,332,498		3,245,574
Other long-term assets	134,903		129,432
Total assets	5,525,364		4,857,166
Liabilities:
Accounts payable	253,748		278,878
Accrued liabilities	247,171		209,910
Other liabilities	340,347		372,592
Total liabilities	4,131,143		3,498,607
SANAD
Joint Ventures
Settled accrued interest	120,000
Assets:
Cash and cash equivalents	293,037		308,761
Accounts receivable	88,174		79,366
Other current assets	6,662		6,703
Property, plant and equipment, net	467,587		492,676
Other long-term assets	19,010		19,006
Total assets	874,470		906,512
Liabilities:
Accounts payable	61,278		61,722
Accrued liabilities	6,021		10,812
Other liabilities	26,300		26,597
Total liabilities	$ 93,599		99,131
SANAD | Saudi Aramco
Joint Ventures
Cash contribution for joint venture		$ 20,000
Additional contribution amount		$ 394,000
Maturity period		25 years
Redeemable noncontrolling interest			$ 396,300