INDEBTEDNESS - Convertible Notes Narrative (Details) - Convertible Debt	Nov. 13, 2020 USD ($) day $ / shares	Mar. 05, 2020 USD ($) day $ / shares
Debt Instrument [Line Items]
Conversion price of convertible debt (in USD per share) \| $ / shares		$ 121.01
2025 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount \| $		$ 1,000,000,000
Interest rate		0.125%
Conversion rate		0.0082641
Conversion price of convertible debt (in USD per share) \| $ / shares		$ 121.01
Redemption price, percentage		100.00%
2025 Convertible Notes \| Debt Instrument, Conversion Term One
Debt Instrument [Line Items]
Threshold trading days		20
Threshold consecutive trading days		30
Threshold percentage of stock price trigger		130.00%
2025 Convertible Notes \| Debt Instrument, Conversion Term Two
Debt Instrument [Line Items]
Threshold trading days		5
Threshold consecutive trading days		5
Threshold percentage of stock price trigger		98.00%
2026 and 2027 Notes
Debt Instrument [Line Items]
Aggregate principal amount \| $	$ 1,150,000,000
Conversion rate	0.003343
Conversion price of convertible debt (in USD per share) \| $ / shares	$ 299.13
Redemption price, percentage	100.00%
2026 and 2027 Notes \| Debt Instrument, Conversion Term One
Debt Instrument [Line Items]
Threshold trading days	20
Threshold consecutive trading days	30
Threshold percentage of stock price trigger	130.00%
2026 and 2027 Notes \| Debt Instrument, Conversion Term Two
Debt Instrument [Line Items]
Threshold trading days	5
Threshold consecutive trading days	5
Threshold percentage of stock price trigger	98.00%
2026 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount \| $	$ 575,000,000
Interest rate	0.00%
Conversion price of convertible debt (in USD per share) \| $ / shares	$ 299.13
2027 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount \| $	$ 575,000,000
Interest rate	0.25%
Conversion price of convertible debt (in USD per share) \| $ / shares	$ 299.13

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

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