Acquisitions - Schedule of assets and liabilities assumed on acquisition date (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 16, 2019	Jun. 30, 2019
Assets:
Goodwill	$ 5,818,613		$ 5,453,805
EMFCO Holdings Incorporated
Assets:
Cash and cash equivalents		$ 8,179
Accounts receivable		82,118
Inventories		112,150
Prepaid expenses		1,343
Plant and equipment		156,802
Other assets		108
Intangible assets		977,060
Goodwill		428,488
Total assets acquired		1,766,248
Liabilities:
Accounts payable, trade		25,727
Accrued payrolls and other compensation		8,863
Accrued domestic and foreign taxes		722
Other accrued liabilities		25,370
Total liabilities assumed		60,682
Net assets acquired		$ 1,705,566