Share-Based Compensation Plans - Assumptions Used to Estimate Fair Value of Share Awards (Details) - Employee Stock Option	12 Months Ended
	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Average risk-free interest rate (as a percent)	0.70%
Expected dividend yield (as a percent)	2.70%
Expected volatility (as a percent)	35.00%
Expected term (years)	6 years