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Benefit Plans Estimated Future Benefit Payments (Details) $ in Millions | Sep. 30, 2021 USD ($)
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Pension Benefits |
Defined Benefit Plan Disclosure |
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months | $ 790
Defined Benefit Plan, Expected Future Benefit Payments, Year Two | 786
Defined Benefit Plan, Expected Future Benefit Payments, Year Three | 782
Defined Benefit Plan, Expected Future Benefit Payments, Year Four | 781
Defined Benefit Plan, Expected Future Benefit Payments, Year Five | 776
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 3,772
Other Post-retirement Benefits |
Defined Benefit Plan Disclosure |
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months | 24
Defined Benefit Plan, Expected Future Benefit Payments, Year Two | 23
Defined Benefit Plan, Expected Future Benefit Payments, Year Three | 21
Defined Benefit Plan, Expected Future Benefit Payments, Year Four | 20
Defined Benefit Plan, Expected Future Benefit Payments, Year Five | 20
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | $ 107

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- Definition Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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