Acquisitions - Schedule of assets and liabilities assumed on acquisition date (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Oct. 29, 2019	Sep. 16, 2019	Jun. 30, 2019
Assets:
Goodwill	$ 7,829,779			$ 5,453,805
Lord
Assets:
Cash and cash equivalents		$ 74,013
Accounts receivable		156,541
Inventories		248,600
Prepaid expenses and other		24,160
Plant and equipment		406,553
Deferred income taxes		0
Other assets		42,220
Intangible assets		1,449,860
Goodwill		1,955,618
Total assets acquired		4,357,565
Liabilities:
Notes payable and long-term debt payable within one year		403
Accounts payable, trade		56,186
Accrued payrolls and other compensation		57,433
Accrued domestic and foreign taxes		4,498
Other accrued liabilities		87,810
Long-term debt		221,161
Pensions and other postretirement benefits		115,265
Deferred income taxes		299,634
Other liabilities		53,470
Noncontrolling interests		6,262
Total liabilities and noncontrolling interests assumed		902,122
Net assets acquired		$ 3,455,443
Exotic
Assets:
Cash and cash equivalents			$ 8,179
Accounts receivable			81,336
Inventories			114,661
Prepaid expenses and other			1,343
Plant and equipment			178,393
Deferred income taxes			2,057
Other assets			1,226
Intangible assets			874,470
Goodwill			503,725
Total assets acquired			1,765,390
Liabilities:
Notes payable and long-term debt payable within one year			0
Accounts payable, trade			23,176
Accrued payrolls and other compensation			8,863
Accrued domestic and foreign taxes			2,123
Other accrued liabilities			25,662
Long-term debt			0
Pensions and other postretirement benefits			0
Deferred income taxes			0
Other liabilities			0
Noncontrolling interests			0
Total liabilities and noncontrolling interests assumed			59,824
Net assets acquired			$ 1,705,566