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

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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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.

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

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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.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount of stock repurchase plan authorized.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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SUBSEQUENT EVENTS (Details)		1 Months Ended	12 Months Ended
SUBSEQUENT EVENTS (Details)	Aug. 26, 2020 USD ($) day $ / shares	Jan. 31, 2018 USD ($) day $ / shares	Jul. 31, 2020	Aug. 31, 2020 USD ($)	Jul. 31, 2018 $ / shares	Jul. 31, 2017
Convertible Debt
Subsequent Event [Line Items]
Debt instrument, face amount \| $		$ 575,000,000.0
Debt instrument, interest rate, stated percentage						0.00%
Debt instrument, conversion ratio		20.4705
Debt instrument, conversion price \| $ / shares		$ 48.85			$ 48.85
Debt Instrument, convertible, threshold percentage of stock price trigger		130.00%	130.00%
Debt instrument, convertible, threshold trading days \| day		20
Debt instrument, convertible, threshold consecutive trading days \| day		30
Debt instrument, redemption price, percentage		100.00%
Convertible Debt \| Common Class A
Subsequent Event [Line Items]
Debt Instrument, convertible, threshold percentage of stock price trigger		98.00%
Subsequent Event \| Common Class A
Subsequent Event [Line Items]
Stock repurchase program, authorized amount \| $				$ 125,000,000.0
Subsequent Event \| Convertible Debt \| Senior Notes due 2026
Subsequent Event [Line Items]
Debt instrument, face amount \| $	$ 750,000,000
Debt instrument, interest rate, stated percentage	2.50%
Debt instrument, conversion ratio	0.036
Debt instrument, conversion price \| $ / shares	$ 27.75
Debt Instrument, convertible, threshold percentage of stock price trigger	150.00%
Debt instrument, convertible, threshold trading days \| day	20
Debt instrument, convertible, threshold consecutive trading days \| day	30
Debt instrument, redemption price, percentage	100.00%
Subsequent Event \| Minimum \| Convertible Debt \| Senior Notes due 2026
Subsequent Event [Line Items]
Debt instrument, conversion price \| $ / shares	$ 25.25
Subsequent Event \| Maximum \| Convertible Debt \| Senior Notes due 2026
Subsequent Event [Line Items]
Debt instrument, conversion price \| $ / shares	$ 27.75