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Debt - Narrative (Details)	1 Months Ended			12 Months Ended
	Oct. 31, 2021 USD ($)	May 31, 2020 USD ($) $ / shares shares	Nov. 30, 2018 USD ($) d $ / shares shares	Dec. 31, 2022 USD ($) trading_day d shares	Dec. 31, 2021 USD ($) shares		Dec. 31, 2020 USD ($) shares		Jun. 30, 2017 USD ($)
Debt Instrument [Line Items]
Repurchase of convertible notes		$ 282,600,000		$ 0	$ 0	[1]	$ 282,600,000	[1]
Repurchase and conversions of notes (in shares) | shares		7,812,268		400,000	800,000
Proceeds from issuance of convertible notes, net of issuance costs				$ 0	$ 0	[1]	$ 1,188,800,000	[1]
Benefit of note hedge upon conversions of 2023 Notes (in shares) | shares				300,000	1,000,000.0
Shares received from Note Hedge | shares				287,492
Term of debt instrument				12 months	12 months
Deposit assets				$ 10,700,000
Maximum
Debt Instrument [Line Items]
Term of debt instrument					18 months
Senior Notes
Debt Instrument [Line Items]
Total principal amount				1,982,300,000	$ 1,999,800,000
Senior Notes | Convertible Notes due 2023
Debt Instrument [Line Items]
Total principal amount			$ 850,000,000	774,800,000	792,300,000
Principal amount exercised				$ 17,500,000	$ 57,700,000
Interest rate on convertible notes (as a percent)			0.75%
Proceeds from issuance of convertible notes, net of issuance costs			$ 836,600,000
Conversion ratio			0.0243476
Conversion price of convertible notes (usd per share) | $ / shares			$ 41.07
Shares received from Note Hedge | shares					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%
Stock counterparties to acquire with warrants purchased (in 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
Senior Notes | Convertible Notes due 2022
Debt Instrument [Line Items]
Total principal amount		$ 260,000,000							$ 400,000,000
Principal amount exercised				$ 140,000,000
Interest rate on convertible notes (as a percent)									0.75%
Senior Notes | 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 ratio		0.006662
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%
Line of Credit
Debt Instrument [Line Items]
Term of debt instrument	5 years
Maximum borrowing capacity of revolving credit agreement				$ 200,000,000
Option to increase revolving line of credit	$ 500,000,000
Line of Credit | Minimum
Debt Instrument [Line Items]
Unused capacity fee (as a percent)				0.175%
Line of Credit | Maximum
Debt Instrument [Line Items]
Unused capacity fee (as a percent)				0.25%
Common Stock
Debt Instrument [Line Items]
Repurchase and conversions of notes (in shares) | shares				400,000	1,400,000		13,500,000
Benefit of note hedge upon conversions of 2023 Notes (in shares) | shares				300,000	1,000,000.0
Common Stock | Senior Notes | Convertible Notes due 2023
Debt Instrument [Line Items]
Repurchase and conversions of notes (in shares) | shares				425,552	1,403,112
Treasury stock reissued (in shares) | shares					794,588
Common Stock | Senior Notes | Convertible Notes due 2022
Debt Instrument [Line Items]
Repurchase and conversions of notes (in shares) | shares				5,649,988
Debt Instrument Conversion Term One | Senior Notes | Convertible Notes due 2023 | Minimum
Debt Instrument [Line Items]
Number of trading days | d				20
Proportion of applicable conversion price (as a percent)				130.00%
Debt Instrument Conversion Term One | Senior Notes | Convertible Notes due 2023 | Maximum
Debt Instrument [Line Items]
Number of trading days | d				30
Debt Instrument Conversion Term One | Senior Notes | Convertible Notes due 2025 | Minimum
Debt Instrument [Line Items]
Number of trading days | trading_day				20
Proportion of applicable conversion price (as a percent)				130.00%
Debt Instrument Conversion Term One | Senior Notes | Convertible Notes due 2025 | Maximum
Debt Instrument [Line Items]
Number of trading days | trading_day				30
Debt Instrument Conversion Term Two | Senior Notes | Convertible Notes due 2023
Debt Instrument [Line Items]
Number of trading days | d				5
Debt Instrument Conversion Term Two | Senior Notes | Convertible Notes due 2023 | Maximum
Debt Instrument [Line Items]
Number of trading days | d				5
Proportion of applicable conversion price (as a percent)				98.00%
Debt Instrument Conversion Term Two | Senior Notes | Convertible Notes due 2025
Debt Instrument [Line Items]
Number of trading days | trading_day				5
Debt Instrument Conversion Term Two | Senior Notes | Convertible Notes due 2025 | Maximum
Debt Instrument [Line Items]
Number of trading days | trading_day				5
Proportion of applicable conversion price (as a percent)				98.00%
Designated as Hedging Instrument | Senior Notes | Convertible Notes due 2023
Debt Instrument [Line Items]
Stock issued upon conversion of senior notes (in shares) | shares			20,700,000
Equity component of 2025 Notes issuance, net of issuance costs			$ 218,900,000
Base Rate | Line of Credit | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.375%
Base Rate | Line of Credit | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.00%
London Interbank Offered Rate (LIBOR) | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.00%
London Interbank Offered Rate (LIBOR) | Line of Credit | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.375%
London Interbank Offered Rate (LIBOR) | Line of Credit | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				2.00%
Simple Risk Free Rate (RFR) | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.0326%
Simple Risk Free Rate (RFR) | Line of Credit | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				1.375%
Simple Risk Free Rate (RFR) | Line of Credit | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				2.00%
Federal Reserve Bank Of New York Rate (NYFRB) | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				0.50%
[1] * We adjusted our 2021 and 2020 amounts to reflect the simplified convertible instruments accounting guidance, which we adopted on a full retrospective basis. Refer to Note 1, “Organization and Significant Accounting Policies,” to the consolidated financial statements for further information.

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