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Comprehensive Income (Loss) (Summary of the Activity in AOCI, Net of the Related Tax Effects) (Details)
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Comprehensive Income (Loss) [Abstract]  
Balance at beginning of period $ 8
Other comprehensive income before reclassifications:  
Pre-tax amount 5
Impact of income taxes 1
After-tax amount 4
Amounts reclassified from AOCI (2)
Total other comprehensive loss 1
Balance at end of period $ 9