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Non-Derivative Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Recurring Basis [Member] - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Assets:    
Cash equivalents $ 0 $ 5
Total assets 0 5
Level 1    
Assets:    
Cash equivalents 0 5
Total assets 0 5
Level 2    
Assets:    
Cash equivalents 0 0
Total assets $ 0 $ 0