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POLICY LIABILITIES (Tables)
3 Months Ended
Mar. 31, 2021
Insurance Loss Reserves [Abstract]  
Schedule of Liability for Unpaid Claims Adjustment Expense
Changes in the liability for unpaid policy claims were as follows:
Three Months Ended
March 31,
(In millions)20212020
Unpaid supplemental health claims, beginning of period$4,389 $3,968 
Less reinsurance recoverables39 31 
Net balance, beginning of period4,350 3,937 
Add claims incurred during the period related to:
Current year1,859 1,837 
Prior years(320)(136)
Total incurred1,539 1,701 
Less claims paid during the period on claims incurred during:
Current year511 556 
Prior years1,061 1,144 
Total paid1,572 1,700 
Effect of foreign exchange rate changes on unpaid claims(162)12 
Net balance, end of period4,155 3,950 
Add reinsurance recoverables 37 33 
Unpaid supplemental health claims, end of period4,192 3,983 
Unpaid life claims, end of period756 710 
Total liability for unpaid policy claims$4,948 $4,693