Shareholders' Equity - Share Repurchase Programs (Details) - Ordinary Options - November 2016 Share Repurchase Program	3 Months Ended	9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Stock Activity [Line Items]
Total amount authorized for repurchase of shares under share repurchase program	$ 1,500,000,000	$ 1,500,000,000
Shares repurchased	0	0
Remaining amount authorized for repurchase of shares	$ 431,200,000	$ 431,200,000