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Debt - Summary of Conversion and Redemption Options and Details Related to Capped Call Confirmations (Details) - Convertible senior notes	6 Months Ended
	Jun. 30, 2021 $ / shares
2026 Notes
Debt Instrument [Line Items]
Debt instrument, conversion rate shares	0.0229830
Conversion Price per Share (usd per share)	$ 43.51
Initial cap price (usd per share)	$ 80.5750
Cap Price Premium	150.00%
2025 Notes
Debt Instrument [Line Items]
Debt instrument, conversion rate shares	0.0148810
Conversion Price per Share (usd per share)	$ 67.20
2024 Notes
Debt Instrument [Line Items]
Debt instrument, conversion rate shares	0.0229830
Conversion Price per Share (usd per share)	$ 43.51
Initial cap price (usd per share)	$ 72.5175
Cap Price Premium	125.00%
2023 Notes
Debt Instrument [Line Items]
Debt instrument, conversion rate shares	0.0127592
Conversion Price per Share (usd per share)	$ 78.37
Initial cap price (usd per share)	$ 105.45
Cap Price Premium	85.00%
2021 Notes
Debt Instrument [Line Items]
Initial cap price (usd per share)	$ 69.19
Cap Price Premium	85.00%

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- Definition

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

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