Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Nov. 05, 2020	Sep. 30, 2020	Sep. 30, 2019
Subsequent Event [Line Items]
Dividends declared, per share		$ 0.115	$ 0.120
Subsequent Event
Subsequent Event [Line Items]
Dividends declared, per share	$ 0.1175
Approved amount of buyback ordinary shares and Chess Depository Instruments ("CDIs")	$ 150