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Employee Benefits Schedule of Expected Benefit Payments (Details) $ in Millions | Dec. 31, 2020 USD ($)
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Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payments in Year One | $ 52
Defined Benefit Plan, Expected Future Benefit Payments in Year Two | 52
Defined Benefit Plan, Expected Future Benefit Payments in Year Three | 54
Defined Benefit Plan, Expected Future Benefit Payments in Year Four | 55
Defined Benefit Plan, Expected Future Benefit Payments in Year Five | 54
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter | 273
Pension Plans, Defined Benefit [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payments in Year One | 45
Defined Benefit Plan, Expected Future Benefit Payments in Year Two | 45
Defined Benefit Plan, Expected Future Benefit Payments in Year Three | 46
Defined Benefit Plan, Expected Future Benefit Payments in Year Four | 47
Defined Benefit Plan, Expected Future Benefit Payments in Year Five | 47
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter | 243
Other Postretirement Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payments in Year One | 5
Defined Benefit Plan, Expected Future Benefit Payments in Year Two | 5
Defined Benefit Plan, Expected Future Benefit Payments in Year Three | 5
Defined Benefit Plan, Expected Future Benefit Payments in Year Four | 6
Defined Benefit Plan, Expected Future Benefit Payments in Year Five | 5
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter | 19
Non Qualified Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payments in Year One | 2
Defined Benefit Plan, Expected Future Benefit Payments in Year Two | 2
Defined Benefit Plan, Expected Future Benefit Payments in Year Three | 3
Defined Benefit Plan, Expected Future Benefit Payments in Year Four | 2
Defined Benefit Plan, Expected Future Benefit Payments in Year Five | 2
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter | $ 11

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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=118255775&loc=d3e1928-114920 + Details
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