Goodwill and intangible assets - Intangible assets by major category (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Finite-Lived Intangible Asset
Gross Carrying Amount	$ 4,184,755	$ 3,243,678
Accumulated Amortization	1,490,999	1,460,401
Patents and technology
Finite-Lived Intangible Asset
Gross Carrying Amount	600,411	265,644
Accumulated Amortization	132,896	130,233
Trademarks
Finite-Lived Intangible Asset
Gross Carrying Amount	627,253	542,573
Accumulated Amortization	255,674	252,388
Customer lists and other
Finite-Lived Intangible Asset
Gross Carrying Amount	2,957,091	2,435,461
Accumulated Amortization	$ 1,102,429	$ 1,077,780