Share-Based Payments - Weighted-Average Assumptions (Details) - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.79%	0.91%	2.46%
Dividend yield	3.11%	4.40%	4.16%
Weighted-average volatility	33.74%	25.40%	24.48%
Expected term (years)	5 years 7 months 6 days	5 years 6 months	5 years 3 months 18 days
Weighted-average fair value (in dollars per share)	$ 10.06	$ 6.70	$ 9.20
Stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility range	30.84%	25.09%	24.46%
Stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility range	42.44%	26.31%	24.60%
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.24%	0.84%	2.49%
Dividend yield			4.17%
Weighted-average volatility	35.46%	26.02%	24.97%
Expected term (years)	2 years 9 months 18 days	2 years 9 months 18 days	2 years 9 months 18 days
Weighted-average fair value (in dollars per share)	$ 45.71	$ 52.60	$ 53.31
PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility range	23.00%	15.21%	13.82%
PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility range	44.71%	45.75%	42.46%

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

+ References

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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