Share-Based Payments - Weighted-average Assumptions (Details)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock Options
Schedule of Weighted Average Assumptions Used to Determine Fair Value of Stock Options
Expected volatility (percent)	28.40%	24.80%	25.30%
Risk-free interest rate (percent)	1.10%	1.00%	2.70%
Expected life (years)	7 years 1 month 6 days	7 years 1 month 6 days	7 years 1 month 6 days
Dividend yield (percent)	1.90%	2.00%	2.10%
Stock Appreciation Rights (SARs)
Schedule of Weighted Average Assumptions Used to Determine Fair Value of Stock Options
Expected volatility (percent)			38.60%
Risk-free interest rate (percent)			1.50%
Expected life (years)			3 months 18 days
Dividend yield (percent)			0.00%

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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