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Employee Share-Based Incentive Compensation Plans - Narrative (Details) $ in Millions	12 Months Ended			36 Months Ended
	Dec. 31, 2022 USD ($) multiplier shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2019 USD ($)
Performance Shares
Share-based compensation arrangement by share-based payment award
Vesting period	3 years
Multiplier for determining payout, low end of range \| multiplier	0
Multiplier for determining payout, high end of range \| multiplier	2
Performance cycle period	3 years
New grants (in shares)	13,225	13,475	14,055
Unamortized grant date fair value \| $	$ 36.7
Performance Shares \| 2020 – 2022
Share-based compensation arrangement by share-based payment award
Targeted performance goal (as a percent)	7.00%
Payout for maximum growth target percentage	200.00%
Performance Shares \| 2021 – 2023
Share-based compensation arrangement by share-based payment award
Targeted performance goal (as a percent)	8.00%
Payout for maximum growth target percentage	200.00%
Performance Shares \| 2022 – 2024
Share-based compensation arrangement by share-based payment award
Targeted performance goal (as a percent)	9.00%
Payout for maximum growth target percentage	200.00%
Performance Shares \| Minimum \| 2020 – 2022
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	2.00%
Performance Shares \| Minimum \| 2021 – 2023
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	3.00%
Performance Shares \| Minimum \| 2022 – 2024
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	4.00%
Performance Shares \| Maximum \| 2020 – 2022
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	12.00%
Performance Shares \| Maximum \| 2021 – 2023
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	13.00%
Performance Shares \| Maximum \| 2022 – 2024
Share-based compensation arrangement by share-based payment award
Payout for minimum growth target percentage	14.00%
Performance Shares \| W T M Incentive Plan
Share-based compensation arrangement by share-based payment award
New grants (in shares)				750
Restricted Stock
Share-based compensation arrangement by share-based payment award
Vesting period	34 months
Unamortized grant date fair value \| $	$ 15.5	$ 15.9	$ 15.2	$ 15.9	$ 16.7
Shares issued (in shares)	13,225	13,475	14,055
Restricted Share Cliff Vesting in January 2024 \| W T M Incentive and Phantom Plan
Share-based compensation arrangement by share-based payment award
Shares issued (in shares)	13,225
Restricted Share Cliff Vesting in January 2023 \| W T M Incentive and Phantom Plan
Share-based compensation arrangement by share-based payment award
Shares issued (in shares)		13,475
Restricted Share Cliff Vesting in January 2022 \| W T M Incentive and Phantom Plan
Share-based compensation arrangement by share-based payment award
Shares issued (in shares)			14,055