Class of hedges exercise price of hedges.

No definition available.

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- 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 http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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- Definition

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

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- Definition

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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- Definition

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

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- Definition

Date the debt instrument was issued, in YYYY-MM-DD format.

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- Definition

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.

+ References

No definition available.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

+ References

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- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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- Definition

The number of derivative instruments of a particular group held by the entity.

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- Definition

Description of the type of derivative instrument, such as a swap, forward, and option. Excludes the underlying risk of the instrument.

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- Definition

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.

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-Publisher FASB
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- Definition

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

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Convertible Senior Notes - 2023 Notes-Convertible Bond Hedge and Warrant Transactions (Detail) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Oct. 20, 2021	Jun. 30, 2018 USD ($) derivative $ / shares $ / derivative shares	Jan. 29, 2022 USD ($) $ / shares shares	Feb. 01, 2020 USD ($) shares	Sep. 30, 2019 USD ($)
Debt Instrument
Debt instrument, issuance date	Oct. 20, 2021
Total cost of convertible note hedge transactions				$ 91,350
Cash proceeds from sale of warrants				$ 50,225
Convertible Bond Hedge and Warrant Transactions [Member]
Debt Instrument
Shares issued upon conversion \| shares				167,100
Deferred tax asset					$ 23,000
Convertible Senior Notes Due 2023 [Member]
Debt Instrument
Shares issued upon conversion \| shares			958,330
Warrants price per share \| $ / shares		$ 309.84
Warrants sold to purchase common stock \| shares		1,730,000
Cash proceeds from sale of warrants		$ 51,000
Convertible Senior Notes Due 2023 [Member] \| Convertible Bond Hedge and Warrant Transactions [Member]
Debt Instrument
Debt instrument, issuance date		Jun. 30, 2018
Convertible note hedge, description			we entered into convertible note hedge transactions whereby we have the option to purchase a total of approximately 1.730 million shares of our common stock at a price of approximately $193.65 per share
Shares issued upon conversion \| shares			23
Conversion price per share \| $ / shares		$ 309.84
Total cost of convertible note hedge transactions		$ 92,000
Convertible note hedge, number of shares \| derivative		1,730,000
Convertible note hedge, price per share \| $ / derivative		193.65
Deferred tax liability			$ 22,000
Deferred tax asset			$ 23,000
Common Stock [Member] \| Convertible Senior Notes Due 2023 [Member]
Debt Instrument
Conversion price per share \| $ / shares		$ 193.65	$ 193.65
Warrants Subject to Certain Adjustment Mechanisms [Member] \| Convertible Senior Notes Due 2023 [Member] \| Convertible Bond Hedge and Warrant Transactions [Member] \| Maximum [Member]
Debt Instrument
Warrants sold to purchase common stock \| shares		3,500,000