Represents the percentage of debt discount that was originally recognized at the issuance of the instrument.

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- Definition

Debt Issuance Cost Amortization Period

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- Definition

Percentage of Underwriting Fee

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- Definition

Represents the percentage of principal amount used in computation of the redemption price to be paid on conversion of convertible notes at the request of the debt holders and upon the occurrence of a designated event.

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No definition available.

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Represents the number of days of written notice to be made to the holders of the notes required for redemption.

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No definition available.

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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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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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- Definition

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

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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

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt discount.

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

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Exchangeable Senior Notes - Additional Information (Details)			1 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 21, 2013 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2019 USD ($) day	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Cash paid for repurchase of debt				$ 1,977,805,000	$ 1,109,854,000	$ 1,088,679,000
2015 Notes
Debt Instrument [Line Items]
Principal amount of notes issued			$ 575,000,000
Fixed interest rate	3.125%		3.125%	3.125%
Related debt issuance costs			$ 11,992,000
Underwriting fee percentage			2.00%
Amortization period			5 years
Conversion ratio	0.01090
Redemption price as percentage of principal amount of notes plus accrued and unpaid interest			100.00%
Redemption price as percentage of principal amount of notes at request of debt holders and upon occurrence of designated event			100.00%
Notes exchange, threshold percentage				130.00%
Notes exchange, threshold trading days \| day				20
Notes exchange, threshold consecutive trading days \| day				30
Effective interest rate	4.00%			4.00%
2015 Notes \| Minimum
Debt Instrument [Line Items]
Number of days of written notice to holders of notes required for redemption			30 days
2015 Notes \| Maximum
Debt Instrument [Line Items]
Number of days of written notice to holders of notes required for redemption			60 days
2013 Notes
Debt Instrument [Line Items]
Principal amount of notes issued		$ 250,000,000
Fixed interest rate		2.375%
Related debt issuance costs		$ 1,672,000			10,000	35,000
Debt, measurement input		1.50%
Unamortized cash discount		$ 3,750,000			230,000	184,000
Amortization period		5 years
Principal amount repurchased					49,259,000	13,911,000
Cash paid for repurchase of debt					$ 80,270,000	$ 20,042,000