Share-Based Compensation - Schedule of Weighted-Average Assumptions Used in Black-Scholes Option Pricing Model and Resulting Weighted-Average Grant Date Fair Value of Share Options Granted (Details) - Share Options - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value (in dollars per share)	$ 42.09	$ 47.17	$ 42.72
Volatility (as a percent)	32.00%	35.00%	35.00%
Expected term (in years)	4 years 6 months	4 years 6 months	4 years 3 months 18 days
Range of risk-free rates, minimum (as a percent)	1.30%	2.20%	1.60%
Range of risk-free rates, maximum (as a percent)	2.50%	3.00%	2.10%
Expected dividend yield (as a percent)	0.00%	0.00%	0.00%