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Restructuring Charges (Tables)
 9 Months Ended
Sep. 30, 2020
Restructuring and Related Activities [Abstract]  
Rollforward of Restructuring Charges
The following table presents our restructuring reserve activity during the period:
($ in millions)Employee termination costs
Balance at December 31, 2019$— 
Charges305 
Cash payments(82)
Other(6)
Balance at September 30, 2020, classified in “Accrued expense and other”$217