Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Amount of assets pledged to secure a debt instrument.

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-SubTopic 470
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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

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- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Debt (Tender rig facility - rig financing agreement) (Details) - USD ($)		1 Months Ended								12 Months Ended
	Apr. 03, 2020	Apr. 30, 2020	Mar. 31, 2020	Nov. 30, 2019	Aug. 31, 2018	Feb. 28, 2018	Aug. 31, 2017	Oct. 31, 2013	May 31, 2013	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt outstanding										$ 2,892,100,000	$ 3,084,700,000
Repayments of long term debt										192,600,000	$ 296,400,000	$ 215,000,000
T-15 \| Seadrill Limited
Debt Instrument [Line Items]
Proceeds from debt									$ 100,500,000
T-16 \| Seadrill Limited
Debt Instrument [Line Items]
Proceeds from debt								$ 93,100,000
Secured Debt \| Tender Rig Facility
Debt Instrument [Line Items]
Debt face amount										440,000,000
Debt instrument, annual amortization payment										19,800,000
Debt prepayment cost					$ 3,700,000	$ 3,800,000	$ 15,800,000
Debt outstanding										$ 18,600,000
Secured Debt \| Tender Rig Facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread (as percent)										4.25%
Secured Debt \| Tender Rig Facility \| T-15
Debt Instrument [Line Items]
Assets pledged as collateral										$ 110,000,000
Secured Debt \| Tender Rig Facility \| T-16
Debt Instrument [Line Items]
Assets pledged as collateral										$ 108,800,000
Repayments of long term debt				$ 20,000,000
Subsequent Event \| Secured Debt \| Tender Rig Facility \| T-15 \| Seadrill Limited
Debt Instrument [Line Items]
Repayments of long term debt	$ 15,900,000	$ 15,900,000	$ 2,700,000