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DAC
12 Months Ended
Dec. 31, 2021
Deferred Charges, Insurers [Abstract]  
DAC DAC
Changes in the DAC asset for the years ended December 31, 2021, 2020 and 2019 were as follows:
 Year Ended December 31,
 202120202019
(in millions)
Balance, beginning of year$477 $471 $555 
Capitalization of commissions, sales and issue expenses122 95 108 
Amortization:
Impact of assumptions updates and model changes(4)(8)(39)
All other(21)(23)(53)
Total amortization(25)(31)(92)
Change in unrealized investment gains and losses63 (58)(100)
Balance, end of year$637 $477 $471