Average stock price.

No definition available.

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

+ Details

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Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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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.

+ Details

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- Details

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- Details

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Net Loss per Share - Additional Information (Detail) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) d $ / shares	Apr. 30, 2021 USD ($)	Jun. 30, 2020 $ / shares
Earnings Per Share Basic [Line Items]
Average stock price \| $ / shares	$ 439.38
0.25% Convertible Senior Notes Due 2022 as Liability Component [Member]
Earnings Per Share Basic [Line Items]
Common stock conversion price \| $ / shares	$ 94.77
Debt instrument, convertible, threshold trading days	20
Debt instrument, convertible, threshold consecutive trading days	30
Percentage of closing price to trigger debt conversion	130.00%
Debt instrument convertible, principal amount \| $	$ 44.5
0.25% Convertible Senior Notes Due 2022 as Liability Component [Member] \| Subsequent Event [Member]
Earnings Per Share Basic [Line Items]
Debt instrument convertible, principal amount \| $		$ 12.7
0.375% Convertible Senior Notes Due 2025 [Member]
Earnings Per Share Basic [Line Items]
Common stock conversion price \| $ / shares	$ 282.52		$ 282.52
Debt instrument, convertible, threshold trading days	20
Debt instrument, convertible, threshold consecutive trading days	30
0.375% Convertible Senior Notes Due 2025 [Member] \| Maximum [Member]
Earnings Per Share Basic [Line Items]
Percentage of closing price to trigger debt conversion	130.00%