FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Segregation of All Assets and Liabilities Measured at Fair Value on a Recurring Basis

The table below segregates all assets and liabilities that are measured at fair value on a recurring basis (which is measured at least annually) into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date.

	June 30, 2020		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	498,644	$	498,644	$	—	$	—	Cash and cash equivalents
Bank-time deposits	213,000		213,000		—		—		Cash and cash equivalents
Commercial paper	94,105		—		94,105		—		Cash and cash equivalents
Corporate bonds	37,261		—		37,261		—		Cash and cash equivalents
Corporate bonds	401,198		—		401,198		—		Short-term investments
Bank-time deposits	352,026		352,026		—		—		Short-term investments
US Treasuries	28,684		28,684		—		—		Short-term investments
Asset-backed securities	1,007		—		1,007		—		Short-term investments
Commercial paper	97,910		—		97,910		—		Short-term investments
Money market funds	467,298		467,298		—		—		Restricted cash and cash equivalents
Bank-time deposits	324		324		—		—		Restricted cash and cash equivalents
Money market funds	289,526		289,526		—		—		Long-term restricted cash and cash equivalents
Private equity	5,364		—		—		5,364		Other assets
Foreign currency forward contracts	(242)		—		(242)		—		Accrued expenses and other current liabilities
Total recurring fair value measurements, net	$	2,486,105	$	1,849,502	$	631,239	$	5,364

	March 31, 2020		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	497,861	$	497,861	$	—	$	—	Cash and cash equivalents
Bank-time deposits	313,757		313,757		—		—		Cash and cash equivalents
Commercial paper	97,544		—		97,544		—		Cash and cash equivalents
Corporate bonds	9,888		—		9,888		—		Cash and cash equivalents
Money market funds	546,604		546,604		—		—		Restricted cash and cash equialents
Corporate bonds	334,631		—		334,631		—		Short-term investments
Bank-time deposits	191,000		191,000		—		—		Short-term investments
US Treasuries	30,819		30,819		—		—		Short-term investments
Commercial paper	87,553		—		87,553		—		Short-term investments
Cross-currency swap	11,275		—		11,275		—		Prepaid expenses and other
Money market funds	89,124		89,124		—		—		Long-term restricted cash and cash equivalents
Private equity	2,759		—		—		2,759		Other assets
Foreign currency forward contracts	(11)		—		(11)		—		Accrued and other current liabilities
Total recurring fair value measurements, net	$	2,212,804	$	1,669,165	$	540,880	$	2,759