XML 126 R95.htm IDEA: XBRL DOCUMENT v3.25.0.1
Benefit Plans - Fair Value of Pension Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value $ 2,149 $ 1,536 $ 1,614
Significant Unobservable Inputs (Level 3) | Buy-in annuity contracts and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,082 1,471 1,540
Significant Unobservable Inputs (Level 3) | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 63 62 70
Significant Unobservable Inputs (Level 3) | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 4 3 $ 4
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 8,401 9,087  
Pension Plans | Total Fair Value      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 6,590 7,003  
Pension Plans | Total Fair Value | Total equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 834 938  
Pension Plans | Total Fair Value | U.S. equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1 3  
Pension Plans | Total Fair Value | Pooled funds - equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 833 935  
Pension Plans | Total Fair Value | Total fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 5,444 5,690  
Pension Plans | Total Fair Value | Government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1,854 2,485  
Pension Plans | Total Fair Value | Pooled funds - fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 945 839  
Pension Plans | Total Fair Value | Corporate bonds and fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 563 902  
Pension Plans | Total Fair Value | Buy-in annuity contracts and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,082 1,464  
Pension Plans | Total Fair Value | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 222 249  
Pension Plans | Total Fair Value | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 3 4  
Pension Plans | Total Fair Value | Cash and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 87 122  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,126 2,131  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 752 866  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1 3  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pooled funds - equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 751 863  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1,138 980  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 70 59  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pooled funds - fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 825 718  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds and fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 243 203  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Buy-in annuity contracts and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 159 182  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 77 103  
Pension Plans | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,315 3,336  
Pension Plans | Significant Other Observable Inputs (Level 2) | Total equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 82 72  
Pension Plans | Significant Other Observable Inputs (Level 2) | U.S. equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled funds - equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 82 72  
Pension Plans | Significant Other Observable Inputs (Level 2) | Total fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,224 3,246  
Pension Plans | Significant Other Observable Inputs (Level 2) | Government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1,784 2,426  
Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled funds - fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 120 121  
Pension Plans | Significant Other Observable Inputs (Level 2) | Corporate bonds and fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 320 699  
Pension Plans | Significant Other Observable Inputs (Level 2) | Buy-in annuity contracts and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Other Observable Inputs (Level 2) | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Other Observable Inputs (Level 2) | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Other Observable Inputs (Level 2) | Cash and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 9 18  
Pension Plans | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,149 1,536  
Pension Plans | Significant Unobservable Inputs (Level 3) | Total equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | U.S. equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled funds - equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | Total fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,082 1,464  
Pension Plans | Significant Unobservable Inputs (Level 3) | Government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled funds - fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | Corporate bonds and fixed-income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 0 0  
Pension Plans | Significant Unobservable Inputs (Level 3) | Buy-in annuity contracts and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 2,082 1,464  
Pension Plans | Significant Unobservable Inputs (Level 3) | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 63 67  
Pension Plans | Significant Unobservable Inputs (Level 3) | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 3 4  
Pension Plans | Significant Unobservable Inputs (Level 3) | Cash and other      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value 1 1  
Pension Plans | Investments measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total investments at fair value $ 1,811 $ 2,084