CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (1,155,739,000)	$ (922,566,000)
Adjustments to reconcile net loss to net cash flow from operating activities:
Depreciation and amortization	283,652,000	333,481,000
Loss on impairment	1,119,517,000	595,510,000
Gain on extinguishment of debt, net	(17,254,000)	(30,616,000)
Reorganization items, net	(11,531,000)	0
Deferred income taxes	6,825,000	(13,688,000)
Amortization of share-based compensation	7,352,000	10,422,000
Other costs, net	(53,179,000)	66,276,000
Changes in components of working capital:
Change in taxes receivable	29,581,000	(12,379,000)
Net changes in other operating assets and liabilities	27,442,000	(57,914,000)
Net cash provided by (used in) operating activities	236,666,000	(31,474,000)
Cash flows from investing activities
Capital expenditures	(112,603,000)	(222,587,000)
Proceeds from disposal of assets, net	1,428,000	9,430,000
Net cash used in investing activities	(111,175,000)	(213,157,000)
Cash flows from financing activities
Borrowings on credit facilities	210,000,000	455,000,000
Repayments of credit facilities	0	(20,000,000)
Repayments of debt	(101,132,000)	(400,000,000)
Debt issuance costs	0	(1,092,000)
Dividends paid to noncontrolling interests	0	(25,109,000)
Cash paid to settle equity awards	(1,010,000)	0
Taxes withheld on employee stock transactions	(417,000)	(2,779,000)
Net cash provided by financing activities	107,441,000	6,020,000
Net increase (decrease) in cash, cash equivalents and restricted cash	232,932,000	(238,611,000)
Cash, cash equivalents and restricted cash, beginning of period	105,924,000	375,907,000
Cash, cash equivalents and restricted cash, end of period	338,856,000	137,296,000
Noble Corp
Cash flows from operating activities
Net loss	(1,104,341,000)	(794,207,000)
Adjustments to reconcile net loss to net cash flow from operating activities:
Depreciation and amortization	282,385,000	331,485,000
Loss on impairment	1,119,517,000	595,510,000
Gain on extinguishment of debt, net	(17,254,000)	(30,616,000)
Reorganization items, net	49,969,000	0
Deferred income taxes	6,825,000	(13,688,000)
Amortization of share-based compensation	7,352,000	10,386,000
Other costs, net	(99,679,000)	(33,724,000)
Changes in components of working capital:
Change in taxes receivable	29,581,000	(12,379,000)
Net changes in other operating assets and liabilities	(2,258,000)	(56,773,000)
Net cash provided by (used in) operating activities	272,097,000	(4,006,000)
Cash flows from investing activities
Capital expenditures	(112,603,000)	(222,587,000)
Proceeds from disposal of assets, net	1,428,000	9,430,000
Net cash used in investing activities	(111,175,000)	(213,157,000)
Cash flows from financing activities
Borrowings on credit facilities	210,000,000	455,000,000
Repayments of credit facilities	0	(20,000,000)
Repayments of debt	(101,132,000)	(400,000,000)
Debt issuance costs	0	(1,092,000)
Dividends paid to noncontrolling interests	0	(25,109,000)
Distributions to parent company, net	(49,829,000)	(29,441,000)
Net cash provided by financing activities	59,039,000	(20,642,000)
Net increase (decrease) in cash, cash equivalents and restricted cash	219,961,000	(237,805,000)
Cash, cash equivalents and restricted cash, beginning of period	105,878,000	375,050,000
Cash, cash equivalents and restricted cash, end of period	$ 325,839,000	$ 137,245,000