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Other Comprehensive Earnings (Loss) (Components Of Other Comprehensive Earnings (Loss)) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Pension and postretirement benefit plans:        
Beginning accumulated pension and postretirement benefits $ (120) $ (122) $ (122) $ (124)
Recognition of net actuarial loss and prior service cost in earnings [1] 1 1 4 4
Income tax expense (0) 0 (1) (1)
Ending accumulated pension and postretirement benefits $ (119) $ (121) $ (119) $ (121)
[1] Recognition of net actuarial loss and prior service cost are included in the computation of net periodic benefit cost, which is a component of other, net in the accompanying consolidated statements of comprehensive earnings.