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Employee Share-Based Incentive Compensation Plans - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended		36 Months Ended
	Jun. 30, 2026 USD ($) shares	Jun. 30, 2025 USD ($) shares	Jun. 30, 2026 USD ($) shares	Jun. 30, 2025 USD ($) shares	Dec. 31, 2024 USD ($) shares	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)
Share-based compensation arrangement by share-based payment award
New grants (in shares)	0	0	9,615	10,645
Performance Share
Share-based compensation arrangement by share-based payment award
Vesting period			3 years
Performance cycle period			3 years
New grants (in shares)					30
Additional compensation cost that would be recognized if all outstanding performance shares vested \| $	$ 41.6		$ 41.6
Performance Share \| Minimum
Share-based compensation arrangement by share-based payment award
Share-based compensation arrangement by share-based payment award, multiplier			0
Performance Share \| Maximum
Share-based compensation arrangement by share-based payment award
Share-based compensation arrangement by share-based payment award, multiplier			2
Restricted Stock
Share-based compensation arrangement by share-based payment award
Vesting period			34 months
Additional compensation cost that would be recognized if all outstanding performance shares vested \| $	$ 32.7	$ 30.7	$ 32.7	$ 30.7	$ 19.9	$ 38.2	$ 21.0	$ 35.6
Issued (in shares)	0	0	9,615	10,645