Shareholders' Equity and Redeemable Non-controlling Interests, Shareholders' Equity, Ordinary shares (Details) - shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Ordinary share outstanding [Abstract]
Beginning balance (in shares)	333,476,883
Purchase of ordinary shares (in shares)	(50,685)
Ending balance (in shares)	333,829,804
Ordinary shares [Member]
Ordinary share outstanding [Abstract]
Beginning balance (in shares)	333,476,883	375,696,661
Share-based compensation (in shares)	225,367	256,140
Employee stock purchase plan (in shares)	178,239	83,473
Purchase of ordinary shares (in shares)	(50,685)	(5,648,900)
Ending balance (in shares)	333,829,804	370,387,374