Net proceeds from issuance of common stock.

No definition available.

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- Definition

Number of authorized capital units or capital shares. This element is relevant to issuers of face-amount certificates and registered investment companies.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
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-Paragraph 1
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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

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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-Paragraph 2
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Balance Type:	credit
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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

The cash inflow from the additional capital contribution to the entity.

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-Publisher FASB
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-SubTopic 10
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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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-Publisher FASB
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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Common Stock) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended	4 Months Ended		12 Months Ended
	Jan. 05, 2016	Jun. 30, 2016	Nov. 23, 2016	Aug. 04, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Authorized shares of capital stock					3,050.0
Authorized shares of common stock					3,000.0
Authorized shares of preferred stock					50.0
Issuance of common stock							$ 2,366.0
Proceeds from sale of common stock					$ 0.0	$ 0.0	1,515.0
Debt Instrument, Face Amount							$ 2,342.0
Dividends declared per share of common stock (in dollars per share)					$ 0.2	$ 0	$ 0
Common stocks
Class of Stock [Line Items]
Issuance of common stock			$ 1,500.0				$ 20.0
Stock Issued During Period, Shares, New Issues	4.3	48.1	116.5	27.7			197.0
Shares Issued, Price Per Share			$ 12.87
Proceeds from sale of common stock	$ 29.0		$ 1,500.0	$ 311.0
Proceeds From Issuance Of Common Stock Net			1,480.0
Payments of Stock Issuance Costs	$ 0.3		$ 15.0
Debt Instrument, Face Amount				$ 369.0
Ultra-deepwater Drillship Contracts [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues		48.1
Proceeds from sale of common stock		$ 540.0
Payments of Stock Issuance Costs		$ 5.0