The carrying amount of debt component of convertible debt which may be settled in cash upon conversion

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The minimum amount of liquidity should be maintained under debt covenants.

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Represents the threshold multiplier on EBITDA to maintain net debt to EBITDA ratio under the debt instrument covenant.

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Debt covenant threshold amount added to aggregate amount of unrestricted cash and cash equivalents to meet minimum liquidity.

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It represents the increased the Guarantor Coverage ratio.

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Represents the denomination of the principal amount of debt that is used in conversion calculations.

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Debt covenant threshold percentage of aggregate amount of unrestricted cash and cash equivalents held in deposit account of a commercial bank outside of the U.S or Canada which is added to the aggregate amount of unrestricted cash and cash equivalents to meet minimum liquidity.

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The amount of debt issued in exchange under debt restructuring.

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The amount of future contractual interest payments

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The exchange price per common share.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer, plus accrued and unpaid interest.

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Amount of assets pledged to secure a debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Face (par) amount of the original debt instrument that was repurchased.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt (Details)	1 Months Ended		6 Months Ended
Debt (Details)	Sep. 30, 2020 USD ($)	Jan. 31, 2017 USD ($) $ / shares	Jun. 30, 2021 USD ($)	Mar. 31, 2021	Dec. 31, 2020 USD ($)	Dec. 13, 2019 USD ($)	Oct. 11, 2018 USD ($)
Debt
Long-term Debt, Gross			$ 2,842,710,000		$ 2,990,971,000
Less: deferred financing costs			19,585,000		22,270,000
Long-term debt			2,823,125,000		2,968,701,000
Gain (Loss) on debt repurchase			8,200,000
Revolving credit facility			557,500,000		672,500,000
2018 revolving credit facility
Debt
Revolving credit facility			$ 557,500,000
Maximum borrowing capacity						$ 1,013,600,000.0000	$ 1,267,000,000
Weighted average interest rate (as a percent)			3.62%
Debt instrument, covenant, minimum liquidity, amount	$ 160,000,000.0
Debt covenant threshold amount added to restricted cash and cash equivalents for minimum liquidity	75,000,000
Debt covenant threshold percentage	$ 75
Collateralized assets, net value			$ 1,260,000,000
2018 revolving credit facility \| Maximum
Debt
Debt to EBITDA ratio	5.5					5.5
2018 revolving credit facility \| Guarantor Subsidiaries \| Minimum
Debt
Debt instrument, guarantor coverage ratio	4.25
2018 revolving credit facility \| Nabors Delaware
Debt
Interest rate on senior notes due (as a percent)							5.50%
Maximum borrowing capacity						$ 981,600,000
2018 revolving credit facility \| Nabors Canada
Debt
Maximum borrowing capacity						$ 32,000,000.0
Senior Notes.
Debt
Principal amount redeemed			30,500,000
Repayment of long-term debt including accrued and unpaid interest			22,400,000
Payment of accrued and unpaid interest			600,000
4.625% senior notes due September 2021
Debt
Senior Notes			$ 82,428,000		86,329,000
Interest rate on senior notes due (as a percent)			4.625%
5.50% senior notes due January 2023
Debt
Senior Notes			$ 24,446,000		28,443,000
Interest rate on senior notes due (as a percent)			5.50%
5.10% senior notes due September 2023
Debt
Senior Notes			$ 120,141,000		121,077,000
Interest rate on senior notes due (as a percent)			5.10%
0.75% senior exchangeable notes due January 2024
Debt
Senior Notes			$ 253,733,000		279,700,000
Interest rate on senior notes due (as a percent)		0.75%	0.75%
5.75% senior notes due February 2025
Debt
Senior Notes			$ 586,308,000		610,818,000
Interest rate on senior notes due (as a percent)			5.75%
7.25% senior notes due January 2026
Debt
Interest rate on senior notes due (as a percent)			7.25%
7.50% senior notes due January 2028
Debt
Interest rate on senior notes due (as a percent)			7.50%
6.50% senior priority guaranteed notes due February 2025
Debt
Senior Notes			$ 50,485,000		50,485,000
Interest rate on senior notes due (as a percent)			6.50%
9.00% senior priority guaranteed notes due February 2025
Debt
Senior Notes			$ 218,082,000		192,032,000
Interest rate on senior notes due (as a percent)			9.00%
7.25% senior guaranteed notes due January 2026
Debt
Senior Notes			$ 559,978,000		559,978,000
Interest rate on senior notes due (as a percent)			7.25%
7.50% senior guaranteed notes due January 2028
Debt
Senior Notes			$ 389,609,000		$ 389,609,000
Interest rate on senior notes due (as a percent)			7.50%
Debt Exchange Transactions
Debt
Future contractual interest payments			$ 9,400,000
Aggregate principal amount exchanged			40,000,000
Aggregate principal amount of debt issued in exchanges			26,050,000
Debt Exchange Transactions \| Nabors Delaware
Debt
Aggregate principal amount exchanged			40,000,000.0
Debt Exchange Transactions \| 0.75% senior exchangeable notes due January 2024
Debt
Long-term Debt			287,300,000
Aggregate amount of senior notes		$ 575,000,000.0
Interest rate on senior notes due (as a percent)		0.75%
Debt exchangeable notes		$ 411,200,000
Equity component		$ 163,800,000
Exchange rate of common shares		0.8018
Principal amount of notes		$ 1,000
Exchange price per common share (in dollars per share) \| $ / shares		$ 1,247.19
Aggregate principal amount exchanged			35,000,000
Debt Exchange Transactions \| 5.75% senior notes due February 2025
Debt
Aggregate principal amount exchanged			5,000,000
Debt Exchange Transactions \| 9.00% senior priority guaranteed notes due February 2025
Debt
Aggregate amount of senior notes			$ 26,100,000
Interest rate on senior notes due (as a percent)			9.00%	9.00%