v3.25.4
Employee Benefit Plans - Fair Value of Investment Categories (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 1,423 $ 1,392 $ 1,507
Not Subject to Leveling $ 119 $ 14  
Percentage of Plan Assets 100.00% 100.00%  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 271 $ 319  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 1,033 1,059  
Cash and cash equivalents:      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 28 20  
Not Subject to Leveling $ 0 $ 0  
Percentage of Plan Assets 2.00% 1.40%  
Cash and cash equivalents: | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 28 $ 20  
Cash and cash equivalents: | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 0 0  
U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 43    
Not Subject to Leveling $ 0    
Percentage of Plan Assets 3.00%    
U.S. | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 0    
U.S. | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 43    
U.S. large companies      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   56  
Not Subject to Leveling   $ 0  
Percentage of Plan Assets   4.00%  
U.S. large companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   $ 0  
U.S. large companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   56  
U.S. small companies      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   14  
Not Subject to Leveling   $ 0  
Percentage of Plan Assets   1.00%  
U.S. small companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   $ 0  
U.S. small companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets   14  
International      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 31 54  
Not Subject to Leveling $ 0 $ 7  
Percentage of Plan Assets 2.20% 3.90%  
International | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 0 $ 20  
International | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 31 27  
Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 1,305 1,241  
Not Subject to Leveling $ 119 $ 6  
Percentage of Plan Assets 91.70% 89.10%  
Fixed income securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 243 $ 279  
Fixed income securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 943 956  
Derivatives      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets 16 8  
Not Subject to Leveling $ 0 $ 0  
Percentage of Plan Assets 1.10%    
Derivatives   0.60%  
Derivatives | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 0 $ 0  
Derivatives | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total plan assets $ 16 $ 8