Debt Instrument, Convertible, Increase (Decrease) in If-converted Value in Excess of Principal

No definition available.

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- Definition

Debt Instrument, Convertible, Maximum Threshold Percentage of Debt Trading Price Trigger

+ References

No definition available.

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- Definition

Exercise Price of Convertible Bond Hedge

+ References

No definition available.

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- Definition

Payments for Convertible Bond Hedges

+ References

No definition available.

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- Definition

Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

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- Definition

Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

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- Definition

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

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

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

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- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

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No definition available.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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No definition available.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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No definition available.

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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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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.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt premium.

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- Definition

Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

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

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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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 the cost of borrowed funds accounted for as interest expense for debt.

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Convertible Senior Notes - Narrative (Details)			1 Months Ended					2 Months Ended	3 Months Ended	6 Months Ended
Convertible Senior Notes - Narrative (Details)	Jun. 30, 2018 USD ($) $ / shares	May 22, 2018 USD ($) $ / shares shares	Jul. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) $ / shares	Jun. 19, 2018 USD ($) $ / shares	May 31, 2018 USD ($)	Aug. 31, 2014 USD ($) d $ / shares shares	Apr. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) $ / shares	Jun. 30, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($)	May 22, 2015 USD ($)
Debt Instrument [Line Items]
Carrying value of equity component of convertible notes	$ 0			$ 0					$ 0	$ 0	$ 18,859,000
Derivative asset	399,409,000			399,409,000					399,409,000	399,409,000	0
Convertible Notes \| 2019 Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding	223,215,000			223,215,000			$ 245,000,000.0		$ 223,215,000	$ 223,215,000	245,000,000
Initial conversion rate (shares per $1,000)							0.0133251
Initial conversion price (USD per share) \| $ / shares							$ 75.05
Interest rate (as a percent)							0.75%
If-converted value in excess of principal	$ 401,300,000	$ 341,600,000
Increase (decrease) in if-converted value in excess of principal				$ 59,700,000
Notices for conversion								$ 21,800,000
Conversion value over the principal amount								31,600,000
Gain (loss) on extinguishment of debt								$ (600,000)
Warrants issued in public offering (shares) \| shares							3,264,643
Exercise price of convertible bond hedge (USD per share) \| $ / shares	$ 75.05	$ 75.05		$ 75.05			$ 75.05		$ 75.05	$ 75.05
Payments for convertible bond hedges							$ 48,100,000
Derivative asset	$ 399,400,000	$ 340,000,000		$ 399,400,000					$ 399,400,000	$ 399,400,000
Warrant exercise price (USD per share) \| $ / shares							$ 125.08
Value of warrants issued							$ 11,600,000
Convertible Notes \| 2019 Convertible Senior Notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Threshold trading days \| d							20
Consecutive trading days \| d							30
Stock price trigger to classify convertible debt as current (as a percent)							130.00%			130.00%
Convertible Notes \| 2019 Convertible Senior Notes \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Threshold trading days \| d							5
Consecutive trading days \| d							10
Maximum threshold of debt trading price trigger (as a percent)							98.00%
Convertible Notes \| 2023 Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding	750,000,000	$ 750,000,000		750,000,000					750,000,000	$ 750,000,000	0
Initial conversion rate (shares per $1,000)						0.0040244
Initial conversion price (USD per share) \| $ / shares		$ 248.48
Interest rate (as a percent)		0.75%
Proceeds from debt, net of issuance costs		$ 733,100,000
Carrying value of equity component of convertible notes	$ 143,986,000			$ 143,986,000					143,986,000	143,986,000	$ 0
Warrants issued in public offering (shares) \| shares		3,018,327
Exercise price of convertible bond hedge (USD per share) \| $ / shares		$ 248.48			$ 248.48
Payments for convertible bond hedges						$ 140,300,000
Warrant exercise price (USD per share) \| $ / shares		$ 315.38
Value of warrants issued						$ 90,000,000
Fair value of of the conversion option derivative liability												$ 144,000,000
Interest expense resulting from change in fair value					$ 13,500,000
Debt issuance costs		$ 16,900,000
Debt issuance costs related to the equity component of convertible debt		3,200,000
Debt issuance costs related to the liability component of convertible debt		$ 13,700,000
Convertible Notes \| 2023 Convertible Senior Notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Threshold trading days \| d							20
Consecutive trading days \| d							30
Stock price trigger to classify convertible debt as current (as a percent)							130.00%
Convertible Notes \| 2023 Convertible Senior Notes \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Threshold trading days \| d							5
Consecutive trading days \| d							10
Maximum threshold of debt trading price trigger (as a percent)							98.00%
Measurement Input, Discount Rate \| Convertible Notes \| 2019 Convertible Senior Notes
Debt Instrument [Line Items]
Discount rate (as a percent)							0.0583
2023 Convertible Senior Notes \| Convertible Notes
Debt Instrument [Line Items]
Interest expense resulting from change in fair value									19,200,000	7,500,000
Subsequent Event \| Convertible Notes \| 2019 Convertible Senior Notes
Debt Instrument [Line Items]
Notices for conversion			$ 64,700,000
Other Expense, Net \| Convertible Notes \| 2019 Convertible Senior Notes
Debt Instrument [Line Items]
Net change in fair value of derivatives									$ 59,400,000	$ 59,400,000