LONG-TERM INCENTIVE COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Schedule of Roll Forward of Stock Options

The following table summarizes the status of, and changes in, our stock options during 2025.

	Options	Weighted- average exercise price		Weighted-average remaining contractual term in years
Outstanding at December 31, 2024	661,377	$	73.76
Exercised	(642,149)	$	73.89
Expired	(1,560)	$	79.71
Outstanding and exercisable at December 31, 2025	17,668	$	68.49	0.6

Schedule of Roll Forward of Nonvested Restricted Shares and Restricted Stock Units

The following table summarizes the status of, and changes in, our nonvested restricted stock units during 2025. 

	Restricted stock units	Weighted- average fair value
Nonvested at December 31, 2024	6,001,579	$	124.73
Time-based grants	1,969,573	$	104.97
Performance-based grants	93,062	$	105.05
Vested (value at vest date was $184.6 million)	(1,783,965)	$	134.70
Forfeited	(361,897)	$	125.45
Nonvested at December 31, 2025	5,918,352	$	114.80

Below is a roll forward of the restricted fund units liability, which is reported in deferred compensation liabilities on the consolidated balance sheet.

(in millions)	2025		2024
Balance at beginning of year	$	14.7	$	—
Amortization of grant date value	54.6		14.8
Amortization of market appreciation (depreciation)	7.9		(0.1)
Forfeitures	(0.1)		—
Settlements	(22.4)		—
Balance at end of year	$	54.7	$	14.7

Schedule of Future Stock-based Compensation Expense

The following table presents the compensation expense to be recognized over the requisite service period of the stock-based awards outstanding at December 31, 2025. Estimated future compensation expense will change to reflect future grants of restricted stock awards and units, future option grants, changes in the probability of performance thresholds being met and adjustments for actual forfeitures.

(in millions)
First quarter 2026	$	53.4
Second quarter 2026	49.0
Third quarter 2026	43.3
Fourth quarter 2026	37.6
2027	81.2
2028 through 2031	61.9
Total	$	326.4

Schedule of Future Stock-based Compensation Expense to be Recognized over the Remaining Vesting Periods of the Restricted Fund Unit Awards

The following table presents the compensation expense to be recognized over the requisite service period of the restricted fund units outstanding at December 31, 2025. Estimated future compensation expense will change to reflect future grants, changes in the market value of the restricted fund units, which is based on selected hypothetical investments and adjustments for actual forfeitures. The grants outstanding will vest by 2030.

(in millions)
First quarter 2026	$	19.3
Second quarter 2026	18.4
Third quarter 2026	17.8
Fourth quarter 2026	14.4
2027	35.4
2028 through 2030	31.8
Total	$	137.1