Retirement and Postretirement Plans - Schedule of Estimated Pension Benefit Plan Contributions (Details) $ in Millions |
Jun. 30, 2026
USD ($)
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|---|---|
| Defined Benefit Plan, Expected Future Employer Contributions [Abstract] | |
| 2026 to participant benefits | $ 9 |
| Defined Benefit Plan, Expected Future Benefit Payment [Abstract] | |
| 2026 | 29 |
| 2027 | 33 |
| 2028 | 33 |
| 2029 | 32 |
| 2030 | 31 |
| 2031-2035 | $ 135 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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