Additional Warrant Transaction

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- Definition

Convertible Debt, Conversion Notices Received, Amount

+ References

No definition available.

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- Definition

Shares of common stock covered by convertible note hedge transactions

+ References

No definition available.

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- Definition

Shares of common stock covered by convertible note hedges and warrant transactions adjusted for the Spin-off

+ References

No definition available.

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- Definition

Warrants Exercised

+ References

No definition available.

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- Definition

Warrants Exercised, Number of Shares Issued

+ References

No definition available.

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- Definition

Warrants Expired

+ References

No definition available.

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- Definition

Number of warrants or rights outstanding.

+ References

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-Publisher FASB
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-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Balance Type:	credit
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- Definition

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

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- Definition

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

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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

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

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Debt - Additional Information (Details) - USD ($)				3 Months Ended	12 Months Ended
Debt - Additional Information (Details) - USD ($)	Apr. 15, 2019	Nov. 15, 2017	Apr. 30, 2014	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 15, 2018	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from 2027 notes, net of issuance costs					$ 0	$ 0	$ 741,039,000
Conversion notices received, amount								$ 273,000,000.0
Warrants exercised (shares)					14,900,000
Shares issued upon exercise of warrants (shares)					975,000
Warrants expired unexercised (shares)					5,400,000
Warrants outstanding (shares)					0
Senior Notes Due 2019
Debt Instrument [Line Items]
Stated interest rate (percent)									0.50%
Convertible debt									$ 1,440,000,000
Shares of common stock covered by note hedges (shares)			16,000,000.0
Additional warrant transaction (shares)			16,000,000.0
Adjustment to number of shares of common stock covered by Bond Hedges and Warrant Transactions (in shares)					20,000,000.0
Debt repaid	$ 1,160,000,000
Unsecured Debt \| Unsecured Senior Notes due December 2027
Debt Instrument [Line Items]
Principal amount of notes		$ 750,000,000.0			$ 750,000,000.0
Stated interest rate (percent)		4.50%
Proceeds from 2027 notes, net of issuance costs		$ 741,000,000.0
Prior to September 1, 2017 [Member] \| Unsecured Debt \| Unsecured Senior Notes due December 2027
Debt Instrument [Line Items]
Redemption price, as percentage of aggregate principal amount (percent)		100.00%
Upon Change of Control Prior to Maturity [Member] \| Unsecured Debt \| Unsecured Senior Notes due December 2027
Debt Instrument [Line Items]
Redemption price, as percentage of aggregate principal amount (percent)		101.00%
Common Stock
Debt Instrument [Line Items]
Settlement of convertible notes and hedges (shares)	4,900,000			1,300,000	4,950,000	1,291,000