FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Dec. 31, 2019

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.

	December 31, 2019		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	$	594,789	$	594,789	$	—	$	—	Cash and cash equivalents
Bank-time deposits	211,463		211,463		—		—		Cash and cash equivalents
Commercial paper	44,256		—		44,256		—		Cash and cash equivalents
Corporate bonds	6,001		—		6,001		—		Cash and cash equivalents
Corporate bonds	303,460		—		303,460		—		Short-term investments
Bank-time deposits	273,000		273,000		—		—		Short-term investments
US Treasuries	16,033		16,033		—		—		Short-term investments
US Agencies	3,499		—		3,499		—		Short-term investments
Commercial paper	103,277		—		103,277		—		Short-term investments
Money market funds	457,573		457,573		—		—		Restricted cash and cash equivalents
Cross-currency swap	3,115		—		3,115		—		Prepaid expenses and other
Private equity	2,759		—		—		2,759		Other assets
Foreign currency forward contracts	(88)		—		(88)		—		Accrued expenses and other current liabilities
Total recurring fair value measurements, net	$	2,019,137	$	1,552,858	$	463,520	$	2,759

	March 31, 2019		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	$	389,936	$	389,936	$	—	$	—	Cash and cash equivalents
Commercial paper	39,246		—		39,246		—		Cash and cash equivalents
US Treasuries	25,449		25,449		—		—		Cash and cash equivalents
Money market funds	565,461		565,461		—		—		Restricted cash and cash equivalents
Bank-time deposits	387,720		387,720		—		—		Short-term investments
Corporate bonds	296,141		—		296,141		—		Short-term investments
US Treasuries	55,634		55,634		—		—		Short-term investments
Commercial paper	4,990		—		4,990		—		Short-term investments
Cross-currency swap	791		—		791		—		Prepaid expenses and other
Private equity	1,823		—		—		1,823		Other assets
Foreign currency forward contracts	(423)		—		(423)		—		Accrued and other current liabilities
Total recurring fair value measurements, net	$	1,766,768	$	1,424,200	$	340,745	$	1,823