Intangible Assets, net - Activity Affecting Intangible Assets (Details) - USD ($)	3 Months Ended			9 Months Ended
	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived trademarks, beginning balance				$ 2,265,331,000
Indefinite-lived trademarks, ending balance	$ 2,283,131,000	$ 2,265,331,000		2,283,131,000
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-lived trademarks and customer relationships, impairment of intangible assets, finite-lived	(1,200,000)
Intangible Assets, Gross [Abstract]
Totals, gross, beginning balance				2,655,132,000
Impairment of intangible assets		0		(1,186,000)
Intangible Assets, Translation Adjustments Gain (Loss)				18,552,000
Totals, gross, ending balance	2,672,498,000	2,655,132,000		2,672,498,000
Finite-lived Intangible Assets, Accumulated Amortization [Abstract]
Accumulated amortization, beginning balance				175,741,000
Accumulated amortization, additions	4,900,000		$ 4,900,000	14,729,000	$ 14,700,000
Accumulated amortization, effects of foreign exchange rates				303,000
Accumulated amortization, ending balance	190,773,000	175,741,000		190,773,000
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived, net	198,594,000	214,060,000		198,594,000
Intangible Assets, Net [Abstract]
Intangible assets, net	2,481,725,000	2,479,391,000		2,481,725,000
Finite-Lived Trademarks and Customer Relationships
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-lived trademarks and customer relationships, beginning balance				389,801,000
Finite-lived trademarks and customer relationships, impairment of intangible assets, finite-lived				(1,186,000)
Finite-lived trademarks and customer relationships, effects of foreign currency exchange rate				752,000
Finite-lived trademarks and customer relationships, ending balance	389,367,000	389,801,000		389,367,000
Finite-lived Intangible Assets, Accumulated Amortization [Abstract]
Accumulated amortization, beginning balance				175,741,000
Accumulated amortization, additions				14,729,000
Accumulated amortization, effects of foreign exchange rates				303,000
Accumulated amortization, ending balance	190,773,000	175,741,000		190,773,000
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived, net	198,594,000			198,594,000
Indefinite- Lived Trademarks
Indefinite-Lived Intangible Assets [Abstract]
Indefinite-lived trademarks, beginning balance				2,265,331,000
Indefinite lived trademarks, effects of foreign currency exchange rate				17,800,000
Indefinite-lived trademarks, ending balance	$ 2,283,131,000	$ 2,265,331,000		$ 2,283,131,000