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Variable Interest Entity (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Apr. 08, 2025
Blue Point Number One, LLC      
Variable Interest Entity [Line Items]      
Ownership interest (as a percent)     40.00%
Initial capital contribution $ 38 $ 195  
Initial contribution   152  
Amount of contribution of intellectual property rights   43  
Blue Point Number One, LLC | JERA Co, Inc.      
Variable Interest Entity [Line Items]      
Percentage of ownership interest held by outside investors     35.00%
Minimum ownership percentage of noncontrolling owner     20.00%
Initial capital contribution 33 170  
Blue Point Number One, LLC | Mitsui & Co., Ltd      
Variable Interest Entity [Line Items]      
Percentage of ownership interest held by outside investors     25.00%
Initial capital contribution $ 23 $ 121  
Blue Point Number One, LLC | JERA Co, Inc. and Mitsui & Co., Ltd.      
Variable Interest Entity [Line Items]      
Percentage of ownership interest held by outside investors     60.00%