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Other Income - Net
12 Months Ended
Dec. 31, 2020
Other Income and Expenses [Abstract]  
Other Income - Net Other Income – Net
 202020192018
 ($ in millions)
   
Pension and other postretirement benefits (Note 12)$91 $63 $61 
Corporate-owned life insurance – net85 69 (10)
Other(23)(26)16 
Total$153 $106 $67