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Other Income - Net (Tables)
12 Months Ended
Dec. 31, 2021
Other Income and Expenses [Abstract]  
Other Income - Net
 202120202019
 ($ in millions)
   
Pension and other postretirement benefits (Note 12)$102 $91 $63 
COLI – net17 85 69 
Other(42)(23)(26)
Total$77 $153 $106