RETIREMENT-RELATED BENEFITS - Net Periodic Pension Cost for Defined Benefit Pension Plans (Details) - Defined Benefit Pension Plans - USD ($) $ in Millions |
3 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Cost/(Income) of Pension Plans | ||
| Service cost | $ 8.0 | $ 8.0 |
| Interest cost | $ 16.0 | $ 14.0 |
| Interest cost - income statement location | Other expense (income) | Other expense (income) |
| Expected return on plan assets | $ (16.0) | $ (16.0) |
| Expected return on plan assets - income statement location | Other expense (income) | Other expense (income) |
| Amortization of prior service costs (credits) | $ 2.0 | |
| Amortization of prior service costs (credits) - income statement location | Other expense (income) | |
| Recognized actuarial losses (gains) | $ 1.0 | $ 3.0 |
| Recognized actuarial losses (gains) - income statement location | Other expense (income) | Other expense (income) |
| Total net periodic pension cost | $ 10.0 | $ 9.0 |
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan, including costs of related party from spin-off. No definition available.
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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. No definition available.
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of income or comprehensive income that includes amortization of gain (loss) component of net periodic benefit (cost) credit for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of income or comprehensive income that includes amortization of prior service cost (credit) component of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of income or comprehensive income that includes expected return (loss) on plan asset component of net periodic benefit (cost) credit for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of income or comprehensive income that includes interest cost component of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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