The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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

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

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

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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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Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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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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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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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Long-term Debt - Senior Unsecured Notes, Unsecured Convertible Notes, and Covenants (Details)	1 Months Ended	12 Months Ended
	May 31, 2020 USD ($) $ / shares	Dec. 31, 2021 USD ($) shares	Jul. 01, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 19, 2017 USD ($)
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Threshold percentage of stock price	130.00%
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Threshold percentage of stock price	98.00%
Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Threshold percentage of stock price	100.00%
5.625% Notes due 2027 \| Senior notes
Debt Instrument [Line Items]
Debt principal amount					$ 400,000,000
Interest rate		5.625%		5.625%	5.625%
4.125% Notes due 2029 \| Senior notes
Debt Instrument [Line Items]
Debt principal amount			$ 400,000,000
Interest rate		4.125%
2.75% Convertible Notes due 2026 \| Senior notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt Instrument, convertible, conversion ratio	0.042735
2.75% Convertible Notes due 2026 \| Senior notes \| Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt Instrument, convertible, conversion ratio	0.0555555
2.75% Convertible Notes due 2026 \| Convertible Notes
Debt Instrument [Line Items]
Debt principal amount	$ 330,500,000	$ 330,500,000
Interest rate	2.75%	2.75%
Proceeds from issuance of long-term debt, net of discounts	$ 322,200,000
Conversion price (in dollars per share) \| $ / shares	$ 23.40
Number of shares issued upon conversion (in shares) \| shares		18,360,815
Amount if-converted value exceeds its principal amount		$ 621,500,000
Carrying amount of equity component	$ 91,800,000	$ 88,200,000		$ 88,200,000
Debt issuance costs	10,200,000
Effective yield		9.23%
Remaining period over which unamortized discount will be amortized		4 years 4 months 24 days
Convertible Notes Due 2026, Liability Component \| Convertible Notes
Debt Instrument [Line Items]
Debt issuance costs	6,600,000
Convertible Notes Due 2026, Equity Component \| Convertible Notes
Debt Instrument [Line Items]
Debt issuance costs	$ 3,600,000