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OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 3 Months Ended
Mar. 31, 2023
Equity [Abstract]  
Changes in AOCI, Net of Tax, by Component
The following table presents changes in AOCI, net of tax, by component:
TABLE 15.1
(in millions)Unrealized
Net Gains (Losses) on
Debt Securities
Available
for Sale		Unrealized
Net Gains
(Losses) on
Derivative
Instruments		Unrecognized
Pension and
Postretirement
Obligations		Total
Three Months Ended March 31, 2023
Balance at beginning of period$(269)$(44)$(44)$(357)
Other comprehensive (loss) income before reclassifications35 4 — 39 
Amounts reclassified from AOCI— 3 — 3 
Net current period other comprehensive (loss) income35 7 — 42 
Balance at end of period$(234)$(37)$(44)$(315)