Segment Information 1 (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	$ 233,788	$ 225,827	$ 175,386
Adjustments for:
Intangible amortization	41,883	32,065	24,371
Intangible Impairment	31,594	0	0
Operating Income	233,788	225,827	175,386
Interest expense, net	40,188	23,485	8,541
Other income, net	(881)	(2,376)	(121)
Income Before Income Taxes	194,481	204,718	166,966
Reportable Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	367,071	321,497	249,579
Adjustments for:
Operating Income	367,071	321,497	249,579
Service Center Based Distribution Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	254,954	238,322	203,267
Adjustments for:
Intangible amortization	13,639	17,375	18,954
Intangible Impairment	31,594	0	0
Operating Income	254,954	238,322	203,267
Fluid Power & Flow Control Segment [Member]
Reconciliation of operating income for reportable segments to the consolidated income before income taxes
Operating income for reportable segments	112,117	83,175	46,312
Adjustments for:
Intangible amortization	28,244	14,690	5,417
Operating Income	112,117	83,175	46,312
Corporate and Other [Member]
Adjustments for:
Corporate and other expense, net	$ 59,806	$ 63,605	$ 49,822