Acquisitions and Divestitures - Purchase price allocation (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Oct. 29, 2019	Sep. 16, 2019	Jun. 30, 2019	Jun. 30, 2018
Assets:
Goodwill	$ 7,869,935			$ 5,453,805	$ 5,504,420
Lord
Assets:
Cash and cash equivalents		$ 74,013
Accounts receivable		153,765
Inventories		248,600
Prepaid expenses		24,131
Plant and equipment		409,163
Deferred income taxes		0
Other assets		42,220
Intangible assets		1,446,660
Goodwill		1,966,865
Total assets acquired		4,365,417
Liabilities:
Notes payable and long-term debt payable within one year		404
Accounts payable, trade		56,186
Accrued payrolls and other compensation		57,571
Accrued domestic and foreign taxes		2,898
Other accrued liabilities		87,810
Long-term debt		221,161
Pensions and other postretirement benefits		115,265
Deferred income taxes		303,958
Other liabilities		53,455
Noncontrolling interests		11,266
Total liabilities and noncontrolling interests assumed		909,974
Net assets acquired		$ 3,455,443
Exotic
Assets:
Cash and cash equivalents			$ 8,179
Accounts receivable			81,336
Inventories			114,661
Prepaid expenses			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
Other liabilities			0
Noncontrolling interests			0
Total liabilities and noncontrolling interests assumed			59,824
Net assets acquired			$ 1,705,566