Defined Benefit Plan, Fair Value of Plan Assets, Uncategorized

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- Definition

Defined Benefit Plan, Plan Assets, Pending Purchase

+ References

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- Definition

Defined Benefit Plan, Plan Assets, Pending Purchases and Pending Redemption Settlement

+ References

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- Definition

Defined Benefit Plan, Plan Assets, Pending Redemption

+ References

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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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.

+ References

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EMPLOYEE BENEFITS - Schedule of Asset Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension and SERP
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 5,890.0	$ 5,514.0	$ 5,775.0
Uncategorized	4,579.8	4,518.7
Pension and SERP \| Total Assets Before 401
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	6,121.8	5,745.1
Pension and SERP \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	1,229.9	1,149.6
Uncategorized	816.2	826.0
Pension and SERP \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	2,168.1	1,988.6
Uncategorized	1,325.6	1,329.6
Pension and SERP \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	1,799.1	1,710.9
Uncategorized	1,799.1	1,710.9
Pension and SERP \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	924.7	896.0
Uncategorized	638.9	652.2
Pension and SERP \| 401 PBOP Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	(231.8)	(231.1)
Pension and SERP \| Level 1
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	801.5	881.7
Pension and SERP \| Level 1 \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	302.8	323.6
Pension and SERP \| Level 1 \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	340.4	314.3
Pension and SERP \| Level 1 \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	0.0	0.0
Pension and SERP \| Level 1 \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	158.3	243.8
Pension and SERP \| Level 2
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	740.5	344.7
Pension and SERP \| Level 2 \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	110.9	0.0
Pending redemption		15.4
Pension and SERP \| Level 2 \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	502.1	344.7
Pending purchase	37.2
Pension and SERP \| Level 2 \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	0.0	0.0
Pension and SERP \| Level 2 \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	127.5	0.0
PBOP
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	1,147.1	1,036.3	$ 1,024.4
Uncategorized	562.0	430.3
PBOP \| Total Assets Before 401
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	915.3	805.2
PBOP \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	395.4	351.1
Uncategorized	214.4	166.3
PBOP \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	272.9	233.9
Uncategorized	185.9	127.5
PBOP \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	120.1	99.0
Uncategorized	120.1	99.0
PBOP \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	126.9	121.2
Uncategorized	41.6	37.5
PBOP \| 401 PBOP Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	231.8	231.1
PBOP \| Level 1
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	257.2	330.3
PBOP \| Level 1 \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	132.7	184.8
PBOP \| Level 1 \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	45.5	61.8
PBOP \| Level 1 \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	0.0	0.0
PBOP \| Level 1 \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	79.0	83.7
PBOP \| Level 2
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	96.1	44.6
PBOP \| Level 2 \| Equity Securities
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	48.3	0.0
Pending purchases and pending redemption settlements	46.8
PBOP \| Level 2 \| Fixed Income
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	41.5	44.6
PBOP \| Level 2 \| Private Equity
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	0.0	0.0
PBOP \| Level 2 \| Real Assets
Defined Contribution Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 6.3	$ 0.0