Goodwill and intangible assets - Intangible assets by major category (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,651,520	$ 5,531,427
Accumulated Amortization	1,956,326	1,732,514
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,000,903	991,596
Accumulated Amortization	191,931	162,528
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	764,741	748,326
Accumulated Amortization	315,029	285,197
Customer lists and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,885,876	3,791,505
Accumulated Amortization	$ 1,449,366	$ 1,284,789