v3.23.1

Convertible Senior Notes - Bond Hedges and Warrant Transactions Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended
	May 31, 2021	Nov. 30, 2020	Feb. 28, 2018	Mar. 31, 2023	Feb. 15, 2018
Debt Instrument [Line Items]
Warrant strike price (usd per share)				$ 78.75
Convertible Senior Notes Due February 2023 | Convertible Debt
Debt Instrument [Line Items]
Initial conversion price (usd per share)					$ 57.38
Bond Hedge
Debt Instrument [Line Items]
Total cost of bond hedge			$ 41.7
Bond Hedge | Convertible Senior Notes Due February 2023 | Convertible Debt
Debt Instrument [Line Items]
Number of bond hedges and warrants issued, subject to anti-dilution adjustments (in shares)	0.1		0.9
Initial conversion price (usd per share)			$ 57.38
Number of securities called by warrants (in shares)		0.7
Proceeds from Issuance of Warrants	$ 26.3	$ 171.7
Warrant Transaction
Debt Instrument [Line Items]
Number of bond hedges and warrants issued, subject to anti-dilution adjustments (in shares)			4.0
Proceeds from Issuance of Warrants			$ 22.4
Warrant strike price (usd per share)			$ 78.75
Warrant Transaction | Convertible Senior Notes Due February 2023 | Convertible Debt
Debt Instrument [Line Items]
Number of bond hedges and warrants issued, subject to anti-dilution adjustments (in shares)	0.6			0.2
Number of securities called by warrants (in shares)		3.2
Proceeds from Issuance of Warrants	$ 19.7
Payments for warrants related to convertible notes		$ 137.5

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The price per share of the conversion feature embedded in the debt instrument.

+ References

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The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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