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Debt Instrument, Convertible, Principal Amount Exercised

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Line of Credit Facility, Maximum Borrowing Capacity, Option to Increase, Amount

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Shares Received From Exercise Of Note Hedge

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

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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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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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

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

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

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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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The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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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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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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

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Debt - Narrative (Details)	1 Months Ended			3 Months Ended	9 Months Ended		12 Months Ended
Debt - Narrative (Details)	Oct. 31, 2021 USD ($)	May 31, 2020 USD ($) $ / shares	Nov. 30, 2018 USD ($) d $ / shares shares	Sep. 30, 2021 shares	Sep. 30, 2022 USD ($) d shares	Sep. 30, 2021 shares	Dec. 31, 2021 USD ($) shares
Debt Instrument [Line Items]
Term deposit					$ 9,800,000
Common Stock
Debt Instrument [Line Items]
Repurchase and conversions of 2022 Notes (shares) \| shares				800,000	400,000	800,000
Stock received from exercise of Note Hedge (shares) \| shares				(500,000)	(300,000)	(500,000)
Senior Notes
Debt Instrument [Line Items]
Total principal amount					$ 1,982,300,000		$ 1,999,800,000
Senior Notes \| Senior Convertible Notes due 2023
Debt Instrument [Line Items]
Total principal amount			$ 850,000,000		774,800,000		792,300,000
Interest rate on convertible notes (as a percent)			0.75%
Proceeds from issuance of convertible notes, net of issuance costs			$ 836,600,000
Conversion price of convertible notes (USD per share) \| $ / shares			$ 41.07
Debt instrument convertible principal amount exercised					$ 17,500,000		$ 57,700,000
Stock received from exercise of Note Hedge (shares) \| shares					287,280		967,380
Holder's repurchase price percentage in event of fundamental change (as a percent)					100.00%
Number of trading days \| d			60
Proportion of conversion price (as a percent)					130.00%
Redemption price (as a percent)					100.00%
Common stock issued to settle converted debt (shares) \| shares			20,700,000
Proceeds from sale of warrants			$ 183,800,000
Exercise price of warrants or rights (USD per share) \| $ / shares			$ 49.60
Conversion ratio			0.0243476
Senior Notes \| Senior Convertible Notes due 2023 \| Designated as Hedging Instrument
Debt Instrument [Line Items]
Stock issued upon conversion of senior notes (shares) \| shares			20,700,000
Conversion price of convertible notes (USD per share)			$ 218,900,000
Senior Notes \| Senior Convertible Notes due 2023 \| Maximum
Debt Instrument [Line Items]
Conversion ratio			0.0322604
Senior Notes \| Senior Convertible Notes due 2023 \| Debt Instrument Conversion Term One \| Minimum
Debt Instrument [Line Items]
Number of trading days \| d					20
Proportion of applicable conversion price (as a percent)					130.00%
Senior Notes \| Senior Convertible Notes due 2023 \| Debt Instrument Conversion Term One \| Maximum
Debt Instrument [Line Items]
Number of trading days \| d					30
Senior Notes \| Senior Convertible Notes due 2023 \| Debt Instrument Conversion Term Two
Debt Instrument [Line Items]
Number of trading days \| d					5
Senior Notes \| Senior Convertible Notes due 2023 \| Debt Instrument Conversion Term Two \| Maximum
Debt Instrument [Line Items]
Number of trading days \| d					5
Proportion of applicable conversion price (as a percent)					98.00%
Senior Notes \| Senior Convertible Notes due 2023 \| Common Stock
Debt Instrument [Line Items]
Repurchase and conversions of 2022 Notes (shares) \| shares							1,403,112
Treasury stock reissued (shares) \| shares					425,188		794,588
Senior Notes \| Senior Convertible Notes due 2025
Debt Instrument [Line Items]
Total principal amount		$ 1,210,000,000			$ 1,207,500,000		$ 1,207,500,000
Interest rate on convertible notes (as a percent)		0.25%
Proceeds from issuance of convertible notes, net of issuance costs		$ 1,190,000,000
Conversion price of convertible notes (USD per share) \| $ / shares		$ 150.11
Holder's repurchase price percentage in event of fundamental change (as a percent)					100.00%
Proportion of conversion price (as a percent)					130.00%
Redemption price (as a percent)					100.00%
Conversion ratio		0.006662
Senior Notes \| Senior Convertible Notes due 2025 \| Maximum
Debt Instrument [Line Items]
Conversion ratio		0.0094928
Senior Notes \| Senior Convertible Notes due 2025 \| Debt Instrument Conversion Term One \| Minimum
Debt Instrument [Line Items]
Number of trading days \| d					20
Proportion of applicable conversion price (as a percent)					130.00%
Senior Notes \| Senior Convertible Notes due 2025 \| Debt Instrument Conversion Term One \| Maximum
Debt Instrument [Line Items]
Number of trading days \| d					30
Senior Notes \| Senior Convertible Notes due 2025 \| Debt Instrument Conversion Term Two
Debt Instrument [Line Items]
Number of trading days \| d					5
Senior Notes \| Senior Convertible Notes due 2025 \| Debt Instrument Conversion Term Two \| Maximum
Debt Instrument [Line Items]
Number of trading days \| d					5
Proportion of applicable conversion price (as a percent)					98.00%
Line of Credit
Debt Instrument [Line Items]
Term of debt instrument	5 years
Maximum borrowing capacity of revolving credit agreement					$ 200,000,000.0
Option to increase revolving line of credit	$ 500,000,000
Line of Credit \| Federal Reserve Bank Of New York Rate (NYFRB)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					0.50%
Line of Credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					1.00%
Line of Credit \| Simple Risk Free Rate (RFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					0.0326%
Line of Credit \| Minimum
Debt Instrument [Line Items]
Interest rate on convertible notes (as a percent)					0.375%
Unused capacity fee (as a percent)					0.175%
Line of Credit \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					1.375%
Line of Credit \| Minimum \| Simple Risk Free Rate (RFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					1.375%
Line of Credit \| Maximum
Debt Instrument [Line Items]
Interest rate on convertible notes (as a percent)					1.00%
Unused capacity fee (as a percent)					0.25%
Line of Credit \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					2.00%
Line of Credit \| Maximum \| Simple Risk Free Rate (RFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)					2.00%