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- Definition

Reorganization under Chapter 11 Bankruptcy, Issuance of Common Stock, Diluted, Employee Incentive Plan, Percent

+ References

No definition available.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ References

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- Definition

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

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- Definition

Amount of reorganization items related to discharge of claims and liabilities upon emergence from bankruptcy.

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- Definition

Amount of net gain (loss) on settlement of other claims for entities in bankruptcy, reported as a reorganization item.

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- Definition

Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations.

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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

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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- Definition

Amount of prepetition liabilities to be settled in cash.

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Chapter 11 Proceedings - Additional Information (Details) - USD ($)		6 Months Ended		12 Months Ended
	Jul. 02, 2018	Dec. 31, 2018	Jul. 01, 2018	Dec. 31, 2019	Dec. 31, 2017	Feb. 26, 2018	Sep. 12, 2017	Dec. 31, 2016
Fresh-Start Adjustment [Line Items]
Amount of new cash commitments in the form of new notes and equity	$ 1,000,000,000					$ 1,080,000,000	$ 1,060,000,000
Number of shares	100,000,000	100,000,000	508,763,020	100,234,973	508,763,020,000,000			508,763,020,000,000
Common stock, value issued	$ 10,000,000	$ 10,000,000	$ 1,017,000,000	$ 10,000,000	$ 1,017,000,000			$ 1,017,000,000
Fully diluted, reserved for Employee Incentive Plan	10.00%
New investor commitment fee	5.00%
Loss on Newbuilding global settlement claim		0	0	0	(1,064,000,000)
Loss on impairment of long-lived assets		0	414,000,000	0	696,000,000
Unamortized debt issuance costs		$ 0	$ 0	$ 0	66,000,000
West Dorado, West Draco, West Aquila and West Libra
Fresh-Start Adjustment [Line Items]
Loss on impairment of long-lived assets					$ 696,000,000
Commitment Parties (in exchange for cash paid pursuant to the Investment Agreement) and Equity Rights Offering Subscribers
Fresh-Start Adjustment [Line Items]
Number of shares	23,750,000
Common stock, value issued	$ 200,000,000
Recipients of Senior Secured Notes (including Commitment Parties and Notes Rights Offering Subscribers)
Fresh-Start Adjustment [Line Items]
Number of shares	54,625,000
Holders of General Unsecured Claims
Fresh-Start Adjustment [Line Items]
Number of shares	14,250,000
Former Holders of Old Seadrill Limited Equity and Seadrill Limited 510(b) Claimants
Fresh-Start Adjustment [Line Items]
Number of shares	1,900,000
Fees to Select Commitment Parties
Fresh-Start Adjustment [Line Items]
Number of shares	475,000
Hemen (on account of Primary Structuring Fee)
Fresh-Start Adjustment [Line Items]
Number of shares	5,000,000
Secured Debt \| Senior secured notes
Fresh-Start Adjustment [Line Items]
Debt, face amount	$ 880,000,000
Unamortized debt issuance costs	9,000,000
Financial guarantee \| Unsecured bonds
Fresh-Start Adjustment [Line Items]
Extinguished financial guarantees	2,400,000,000
Financial guarantee \| Newbuild obligation
Fresh-Start Adjustment [Line Items]
Extinguished financial guarantees	1,000,000,000
Financial guarantee \| Unsecured interest rate and currency swaps
Fresh-Start Adjustment [Line Items]
Extinguished financial guarantees	$ 250,000,000