Condensed Consolidated Statements of Shareholders' Equity and Mezzanine Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Interest Rate Swap	Interest Rate Cap	Cumulative Effect, Period of Adoption, Adjustment	Preferred Shares	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Interest Rate Swap	Accumulated Other Comprehensive Income (Loss) Interest Rate Cap	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Beginning balance, shares (in shares) at Jun. 30, 2020						105,916								(13,356)
Beginning balance at Jun. 30, 2020	$ 2,076,803					$ 1,486,947			$ (87,383)			$ 876,552		$ (199,313)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(575)								(120)
Share-based and deferred compensation activities	11,266					$ 16,764								$ (5,498)
Shares issued (in shares)						10,698		2,300
Shares issued in underwritten public offering	883,908					$ 438,589		$ 445,319
Net Earnings	46,266											46,266
Foreign currency translation adjustments	35,524								35,524
Change in fair value of interest rate swap, net of taxes	(555)								(555)
Dividends	(6,535)											(6,535)
Ending balance, shares (in shares) at Sep. 30, 2020						117,189		2,300						(13,476)
Ending balance at Sep. 30, 2020	3,046,677					$ 1,942,300		$ 445,319	(52,414)			916,283		$ (204,811)
Mezzanine Equity
Series B issued (in shares)						10,698		2,300
Beginning balance, shares (in shares) at Jun. 30, 2020						105,916								(13,356)
Beginning balance at Jun. 30, 2020	2,076,803					$ 1,486,947			(87,383)			876,552		$ (199,313)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	215,258
Foreign currency translation adjustments	81,191
Change in fair value of interest rate swap, net of taxes		$ 10,693	$ 0
Ending balance, shares (in shares) at Mar. 31, 2021						118,370		2,300						(13,490)
Ending balance at Mar. 31, 2021	3,325,148					$ 2,011,210		$ 445,319	4,501			1,071,362		$ (207,244)
Ending balance (in shares) at Mar. 31, 2021					75
Ending balance at Mar. 31, 2021					$ 716,200
Beginning balance, shares (in shares) at Jun. 30, 2020						105,916								(13,356)
Beginning balance at Jun. 30, 2020	2,076,803					$ 1,486,947			(87,383)			876,552		$ (199,313)
Ending balance, shares (in shares) at Jun. 30, 2021						119,127		2,300						(13,640)
Ending balance at Jun. 30, 2021	$ 3,406,170			$ (11,472)		$ 2,028,273	$ (56,388)	$ 445,319	14,267			1,136,777	$ 44,916	$ (218,466)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Ending balance (in shares) at Jun. 30, 2021					75
Ending balance at Jun. 30, 2021	$ 726,178				$ 726,178
Beginning balance, shares (in shares) at Sep. 30, 2020						117,189		2,300						(13,476)
Beginning balance at Sep. 30, 2020	3,046,677					$ 1,942,300		$ 445,319	(52,414)			916,283		$ (204,811)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(854)								(11)
Share-based and deferred compensation activities	42,215					$ 43,533								$ (1,318)
Net Earnings	87,900											87,900
Foreign currency translation adjustments	64,067								64,067
Change in fair value of interest rate swap, net of taxes	2,854								2,854
Dividends	(6,900)											(6,900)
Ending balance, shares (in shares) at Dec. 31, 2020						118,043		2,300						(13,487)
Ending balance at Dec. 31, 2020	3,236,813					$ 1,985,833		$ 445,319	14,507			997,283		$ (206,129)
Ending balance (in shares) at Dec. 31, 2020					0
Ending balance at Dec. 31, 2020					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(327)								(3)
Share-based and deferred compensation activities	24,262					$ 25,377								$ (1,115)
Shares issued (in shares)					75
Net Earnings	81,092
Foreign currency translation adjustments	(18,400)								(18,400)
Change in fair value of interest rate swap, net of taxes	8,394	8,394	0
Accretion to redemption value of Series B shares issued in March 2021	(9)											(9)
Dividends	(7,004)											(7,004)
Ending balance, shares (in shares) at Mar. 31, 2021						118,370		2,300						(13,490)
Ending balance at Mar. 31, 2021	3,325,148					$ 2,011,210		$ 445,319	4,501			1,071,362		$ (207,244)
Mezzanine Equity
Series B shares issued in March 2021					$ 716,087
Series B issued (in shares)					75
Accretion to redemption value of Series B shares issued in March 2021					$ 9
Dividends					$ 104
Ending balance (in shares) at Mar. 31, 2021					75
Ending balance at Mar. 31, 2021					$ 716,200
Beginning balance, shares (in shares) at Jun. 30, 2021						119,127		2,300						(13,640)
Beginning balance at Jun. 30, 2021	3,406,170			(11,472)		$ 2,028,273	(56,388)	$ 445,319	14,267			1,136,777	44,916	$ (218,466)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(844)								(200)
Share-based and deferred compensation activities	17,632					$ 30,567								$ (12,935)
Net Earnings	74,464											74,464
Foreign currency translation adjustments	(14,381)								(14,381)
Change in fair value of interest rate swap, net of taxes		2,681								$ 2,681
Accretion to redemption value of Series B shares issued in March 2021	(478)											(478)
Dividends	(16,604)											(16,604)
Ending balance, shares (in shares) at Sep. 30, 2021						119,971		2,300						(13,840)
Ending balance at Sep. 30, 2021	3,458,012					$ 2,002,452		$ 445,319	2,567			1,239,075		$ (231,401)
Beginning balance (in shares) at Jun. 30, 2021					75
Beginning balance at Jun. 30, 2021	726,178				$ 726,178
Mezzanine Equity
Accretion to redemption value of Series B shares issued in March 2021					478
Dividends					$ 9,704
Ending balance (in shares) at Sep. 30, 2021					75
Ending balance at Sep. 30, 2021					$ 736,360
Beginning balance, shares (in shares) at Jun. 30, 2021						119,127		2,300						(13,640)
Beginning balance at Jun. 30, 2021	3,406,170			$ (11,472)		$ 2,028,273	$ (56,388)	$ 445,319	14,267			1,136,777	$ 44,916	$ (218,466)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	191,123
Foreign currency translation adjustments	(11,461)
Change in fair value of interest rate swap, net of taxes		36,395	8,916
Ending balance, shares (in shares) at Mar. 31, 2022						120,319		2,300						(13,869)
Ending balance at Mar. 31, 2022	3,627,765					$ 2,045,850		$ 445,319	48,117			1,321,779		$ (233,300)
Beginning balance (in shares) at Jun. 30, 2021					75
Beginning balance at Jun. 30, 2021	726,178				$ 726,178
Ending balance (in shares) at Mar. 31, 2022					75
Ending balance at Mar. 31, 2022	756,411				$ 756,411
Beginning balance, shares (in shares) at Sep. 30, 2021						119,971		2,300						(13,840)
Beginning balance at Sep. 30, 2021	3,458,012					$ 2,002,452		$ 445,319	2,567			1,239,075		$ (231,401)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(82)								(13)
Share-based and deferred compensation activities	16,048					$ 16,854								$ (806)
Net Earnings	67,657											67,657
Foreign currency translation adjustments	2,593								2,593
Change in fair value of interest rate swap, net of taxes		9,910								9,910
Accretion to redemption value of Series B shares issued in March 2021	(496)											(496)
Dividends	(16,311)											(16,311)
Ending balance, shares (in shares) at Dec. 31, 2021						120,053		2,300						(13,853)
Ending balance at Dec. 31, 2021	3,537,413					$ 2,019,306		$ 445,319	15,070			1,289,925		$ (232,207)
Beginning balance (in shares) at Sep. 30, 2021					75
Beginning balance at Sep. 30, 2021					$ 736,360
Mezzanine Equity
Accretion to redemption value of Series B shares issued in March 2021					496
Dividends					$ 9,307
Ending balance (in shares) at Dec. 31, 2021					75
Ending balance at Dec. 31, 2021					$ 746,163
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)						(266)								(16)
Share-based and deferred compensation activities	25,451					$ 26,544								$ (1,093)
Net Earnings	49,002											49,002
Foreign currency translation adjustments	327								327
Change in fair value of interest rate swap, net of taxes		$ 23,804	$ 8,916							$ 23,804	$ 8,916
Accretion to redemption value of Series B shares issued in March 2021	(516)											(516)
Dividends	(16,632)											(16,632)
Ending balance, shares (in shares) at Mar. 31, 2022						120,319		2,300						(13,869)
Ending balance at Mar. 31, 2022	3,627,765					$ 2,045,850		$ 445,319	$ 48,117			$ 1,321,779		$ (233,300)
Mezzanine Equity
Accretion to redemption value of Series B shares issued in March 2021					516
Dividends					$ 9,732
Ending balance (in shares) at Mar. 31, 2022					75
Ending balance at Mar. 31, 2022	$ 756,411				$ 756,411