Summary Of Significant Accounting Policies (Narrative) (Details) $ / shares in Units, $ in Thousands	1 Months Ended	11 Months Ended		12 Months Ended
	Feb. 02, 2021 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2022 USD ($) Customer $ / shares	Dec. 31, 2021 USD ($) Customer $ / shares	Dec. 31, 2020 USD ($) Customer	Jun. 30, 2022 USD ($)	Feb. 03, 2021 USD ($)	Jan. 01, 2021 USD ($)
Summary Of Significant Accounting Policies [Line Items]
bad debt expense				$ 2,200		$ 11,900
Payment term of obligation				30 days
Other gains				$ 29,100
bad debt recoveries								$ 4,900	$ 200
Property, Plant and Equipment, useful life		36 months
Number of customers exceeding threshhold measurement | Customer				0	0	0
Allowance for doubtful accounts		$ 2,200	$ 2,200	$ 6,100	$ 2,200
Amount of notes receivable net							$ 2,600
Less: Note Receivable		60,588	$ 60,588	69,679	$ 60,588
Asset Retirement Costs				11,100			$ 38,200
Other (gains) and losses, net		16,726		(29,134)
Common stock, par value | $ / shares	$ 0.001
Foreign currency gains (losses)	$ 2,100	8,800		12,600		$ 8,900
Restructuring expenses	$ 1,270	$ 22,952		$ 6,375		$ 47,055
Common Class A [Member]
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value | $ / shares	$ 0.001	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common Class B [Member]
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value | $ / shares		$ 0.01	$ 0.01	$ 0.01	$ 0.01
Asia Pacific [Member]
Summary Of Significant Accounting Policies [Line Items]
Other (gains) and losses, net		$ 11,700
Decommissioning liability [Member]
Summary Of Significant Accounting Policies [Line Items]
Other (gains) and losses, net				$ 17,400
Well Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Other gains				23,600
Other (gains) and losses, net		13,100
Shut Down Cost		8,900
Inventory write down			$ 6,500
Other ShutDown Cost			$ 2,400
Rentals [Member]
Summary Of Significant Accounting Policies [Line Items]
Other gains				5,200
Other (gains) and losses, net		$ 3,600
Collateral, Secured Obligations [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted Cash				77,300
Escrow, Future Decommissioning Obligations [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted Cash				2,800
Oil and Gas Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Amount of notes receivable net				2,700
Asset Retirement Costs				$ 11,100
Senior Unsecured Notes Due 2024 [Member]
Summary Of Significant Accounting Policies [Line Items]
Stated interest rate on unsecured senior notes	7.75%