Goodwill and intangible assets - Intangible assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Jun. 30, 2017
Finite-Lived Intangible Asset
Gross Carrying Amount	$ 3,364,435	$ 3,374,723
Accumulated Amortization	1,190,331	1,067,239
Intangible amortization expense	110,746
Estimated amortization expense, year ending June 30, 2018	215,424
Estimated amortization expense, year ending June 30, 2019	205,080
Estimated amortization expense, year ending June 30, 2020	196,218
Estimated amortization expense, year ending June 30, 2021	187,406
Estimated amortization expense, year ending June 30, 2022	151,240
Patents
Finite-Lived Intangible Asset
Gross Carrying Amount	267,706	254,049
Accumulated Amortization	110,912	100,860
Trademarks
Finite-Lived Intangible Asset
Gross Carrying Amount	558,178	553,691
Accumulated Amortization	217,017	200,413
Customer lists and other
Finite-Lived Intangible Asset
Gross Carrying Amount	2,538,551	2,566,983
Accumulated Amortization	$ 862,402	$ 765,966