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Policy Claims and Benefits (Tables)
9 Months Ended
Sep. 30, 2021
Insurance [Abstract]  
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
The liability for unpaid claims is reported in future policy benefits and other policy claims and benefits on the Company’s condensed consolidated balance sheets. Activity associated with unpaid claims is summarized below (dollars in millions):
Nine Months Ended September 30,
2021
2020
Balance, beginning of period$7,556 $6,786 
Less: reinsurance recoverable(641)(564)
Net balance, beginning of period6,915 6,222 
Incurred:
Current year9,948 8,382 
Prior years(159)162 
Total incurred9,789 8,544 
Payments:
Current year(3,712)(3,394)
Prior years(5,229)(4,683)
Total payments(8,941)(8,077)
Other changes:
Interest accretion30 27 
Foreign exchange adjustments(135)(28)
Total other changes(105)(1)
Net balance, end of period7,658 6,688 
Plus: reinsurance recoverable538 627 
Balance, end of period$8,196 $7,315