|**Leases (Tables)**                   | 12 Months Ended                                                                                                                                                                                                                                                                                              
|------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Leases [Abstract]**                 |                                                                                                                                                                                                                                                                                                              
|Assets and liabilities                | The following table presents operating lease ROU assets and lease liabilities.(In millions)December 31, 2024December 31, 2023Operating lease ROU assets$158$140Operating lease liabilities239215                                                                                                             
|                                      |                                                                                                                                                                                                                                                                                                              
|(In millions)                         | December 31, 2024                                                                                                                                                                                                                                                                                            
|Operating lease ROU assets            | $                                                                                                                                                                                                                                                                                                            
|Operating lease liabilities           | 239                                                                                                                                                                                                                                                                                                          
|Operating lease, liability, maturity  | The following table presents the maturities of operating lease liabilities.(In millions)December 31, 20242025$43202634202732202829202929Thereafter121Total lease payments288Less: Discount(49)Total operating lease liabilities$239                                                                          
|                                      |                                                                                                                                                                                                                                                                                                              
|(In millions)                         | December 31, 2024                                                                                                                                                                                                                                                                                            
|2025                                  | $                                                                                                                                                                                                                                                                                                            
|2026                                  | 34                                                                                                                                                                                                                                                                                                           
|2027                                  | 32                                                                                                                                                                                                                                                                                                           
|2028                                  | 29                                                                                                                                                                                                                                                                                                           
|2029                                  | 29                                                                                                                                                                                                                                                                                                           
|Thereafter                            | 121                                                                                                                                                                                                                                                                                                          
|Total lease payments                  | 288                                                                                                                                                                                                                                                                                                          
|Less: Discount                        | (49)                                                                                                                                                                                                                                                                                                         
|Total operating lease liabilities     | $                                                                                                                                                                                                                                                                                                            
|Lease cost                            | The following table presents the weighted average remaining lease term for operating leases and weighted average discount rate used in calculating operating lease ROU assets.December 31, 2024December 31, 2023Weighted average remaining lease term8.8 years8.4 yearsWeighted average discount rate3.9%3.7%
|                                      |                                                                                                                                                                                                                                                                                                              
|                                      | December 31, 2024                                                                                                                                                                                                                                                                                            
|Weighted average remaining lease term | 8.8 years                                                                                                                                                                                                                                                                                                    
|Weighted average discount rate        | 3.9                                                                                                                                                                                                                                                                                                          

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