XML 160 R102.htm IDEA: XBRL DOCUMENT v3.20.4
Retirement Plans (Schedule Of Projected Benefit Obligation And Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Retirement Plans[Abstract]    
Projected benefit obligation $ 246 $ 924
Accumulated benefit obligation [1] $ 246 223
Fair value of plan assets   $ 694
[1] The projected and accumulated benefit obligation for the qualified pension plan was not in excess of plan assets as of December 31, 2020. The 2019 qualified pension plan contained $690 million of accumulated benefit obligations which were not in excess of plan assets.