Stock-Based Compensation Plans - Summary of Performance Share Awards Activity (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning Balance	930,392
Granted	1,131,788
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease)	713,202
Vested	(327,551)
Forfeited	(157,552)
Undistributed vested awards	(1,067,763)
Ending Balance	1,222,516	930,392
Nonvested, Weighted Average Exercise Price (in usd per share)	$ 44.96	$ 43.67
Granted, Weighted Average Grant Date Fair Value (in usd per share)	43.37	$ 46.61	$ 47.37
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Change in Performance, Weighted Average Grant Date Fair Value	45.59
Vested, Weighted Average Exercise Price (in usd per share)	38.66
Forfeited, Weighted Average Exercise Price (in usd per share)	44.45
Undistributed Vested Awards, Weighted Average Grant Date Fair Value (in usd per share)	$ 44.58
Fully Vested Stock Based Compensation Issued To Retirement Eligible Employees	1,934,238	1,414,661

Fully vested stock based compensation issued to retirement-eligible employees

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Represents restricted stock units that are vested but not distributed to retirement-eligible employees.

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No definition available.

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Represents the weighted average exercise price of equity instruments other than options that vested but were not distributed to retirement eligible employees.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Change in Performance, Weighted Average Grant Date Fair Value

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No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made 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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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The net total number of shares (or other type of equity) under an equity-based award plan, other than a stock option plan, that were granted, vested and forfeited during the reporting period.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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