Pension and Other Post-Employment Benefits (Narrative) (Details) - USD ($) $ in Millions |
9 Months Ended | |
---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
|
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement (Benefit) Expense | $ 17 | $ 15 |
Operating Expense [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement (Benefit) Expense | 16 | 15 |
Administrative Expense [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement (Benefit) Expense | 4 | 4 |
Other Nonoperating Income (Expense) [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement (Benefit) Expense | $ (3) | $ (4) |