v3.25.4
Pension And Postretirement Benefits (Schedule Of Fair Value Of Pension And Postretirement Assets And Liabilities By Level) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 28,677 $ 27,919 $ 30,098
Pension Benefits | Assets at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 19,988 19,312  
Pension Benefits | Non-interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 92 146  
Pension Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 4 23  
Pension Benefits | Foreign currency contracts      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3 2  
Pension Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,799 2,610  
Pension Benefits | Equity securities: International equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 1,593 1,145  
Pension Benefits | Fixed income securities: Corporate bonds and other investments      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 7,021 6,926  
Pension Benefits | Fixed income securities: Government and municipal bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3,701 4,274  
Pension Benefits | Fixed income securities: Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 198 267  
Pension Benefits | Real estate and real assets      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,403 2,311  
Pension Benefits | Securities lending collateral1      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,172 1,604  
Pension Benefits | Receivable for variation margin      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2 4  
Pension Benefits | Investments sold short and other liabilities at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets (51) (164)  
Pension Benefits | Private Equity Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 5,029 $ 5,138  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Pension Benefits | Real Estate Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 1,198 $ 1,957  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Pension Benefits | Commingled Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 5,076 $ 3,895  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Pension Benefits | Other assets (liabilities)      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ (2,563) $ (2,219)  
Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 722 1,144 1,763
Postretirement Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 505 822  
Postretirement Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3 1  
Postretirement Benefits | Private Equity Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 6 $ 9  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Postretirement Benefits | Real Estate Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 9 $ 9  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Postretirement Benefits | Commingled Funds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 197 $ 299  
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List] Assets held at net asset value practical expedient Assets held at net asset value practical expedient  
Postretirement Benefits | Other assets (liabilities)      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 2 $ 4  
Level 1, 2, and 3 | Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 19,937 19,148  
Level 1, 2, and 3 | Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 508 823  
Level 1 | Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 5,154 4,417  
Level 1 | Pension Benefits | Assets at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 5,202 4,569  
Level 1 | Pension Benefits | Non-interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 92 146  
Level 1 | Pension Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 4 23  
Level 1 | Pension Benefits | Foreign currency contracts      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 1 | Pension Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,797 2,608  
Level 1 | Pension Benefits | Equity securities: International equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 1,593 1,145  
Level 1 | Pension Benefits | Fixed income securities: Corporate bonds and other investments      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 1 | Pension Benefits | Fixed income securities: Government and municipal bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 26 0  
Level 1 | Pension Benefits | Fixed income securities: Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 1 | Pension Benefits | Real estate and real assets      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 1 | Pension Benefits | Securities lending collateral1      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 688 643  
Level 1 | Pension Benefits | Receivable for variation margin      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2 4  
Level 1 | Pension Benefits | Investments sold short and other liabilities at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets (48) (152)  
Level 1 | Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 508 817  
Level 1 | Postretirement Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 505 816  
Level 1 | Postretirement Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3 1  
Level 2 | Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 12,364 12,417  
Level 2 | Pension Benefits | Assets at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 12,367 12,429  
Level 2 | Pension Benefits | Non-interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Foreign currency contracts      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3 2  
Level 2 | Pension Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Equity securities: International equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Fixed income securities: Corporate bonds and other investments      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 7,007 6,925  
Level 2 | Pension Benefits | Fixed income securities: Government and municipal bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 3,675 4,274  
Level 2 | Pension Benefits | Fixed income securities: Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 198 267  
Level 2 | Pension Benefits | Real estate and real assets      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Securities lending collateral1      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 1,484 961  
Level 2 | Pension Benefits | Receivable for variation margin      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 2 | Pension Benefits | Investments sold short and other liabilities at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets (3) (12)  
Level 2 | Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 6  
Level 2 | Postretirement Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 6  
Level 2 | Postretirement Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,419 2,314 2,957
Level 3 | Pension Benefits | Assets at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,419 2,314  
Level 3 | Pension Benefits | Non-interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Foreign currency contracts      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2 2 2
Level 3 | Pension Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2 2  
Level 3 | Pension Benefits | Equity securities: International equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Fixed Income Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 14 1 1
Level 3 | Pension Benefits | Fixed income securities: Corporate bonds and other investments      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 14 1  
Level 3 | Pension Benefits | Fixed income securities: Government and municipal bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Fixed income securities: Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Real estate and real assets      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 2,403 2,311 $ 2,954
Level 3 | Pension Benefits | Securities lending collateral1      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Receivable for variation margin      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Pension Benefits | Investments sold short and other liabilities at fair value      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Postretirement Benefits | Interest bearing cash      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Level 3 | Postretirement Benefits | Equity securities: Domestic equities      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 0 0  
Assets held at net asset value practical expedient | Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets 11,303 10,990  
Assets held at net asset value practical expedient | Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Total Plan Net Assets $ 212 $ 317