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INVESTMENT SECURITIES (Tables)
 3 Months Ended
Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investment Securities Classified as Current and Long-Term
Investment securities classified as current and long-term were as follows at March 31, 2025 and December 31, 2024, respectively:
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
 (in millions)
March 31, 2025
U.S. Treasury and other U.S. government
    corporations and agencies:
U.S. Treasury and agency obligations$3,058 $2 $(61)$2,999 
Mortgage-backed securities4,399 2 (428)3,973 
Tax-exempt municipal securities521 — (24)497 
Mortgage-backed securities:
Residential599 1 (55)545 
Commercial1,226 1 (72)1,155 
Asset-backed securities1,367 5 (18)1,354 
Corporate debt securities8,255 25 (505)7,775 
Total debt securities$19,425 $36 $(1,163)$18,298 
December 31, 2024
U.S. Treasury and other U.S. government
    corporations and agencies:
U.S. Treasury and agency obligations$3,336 $1 $(110)$3,227 
Mortgage-backed securities4,504 — (509)3,995 
Tax-exempt municipal securities548 — (22)526 
Mortgage-backed securities:
Residential586 — (64)522 
Commercial1,290 1 (85)1,206 
Asset-backed securities1,424 3 (24)1,403 
Corporate debt securities8,330 21 (595)7,756 
Total debt securities$20,018 $26 $(1,409)$18,635 
Schedule of Gross Unrealized Losses and Fair Value by Investment Category
Gross unrealized losses and fair values aggregated by investment category and length of time of individual debt securities that have been in a continuous unrealized loss position for which no allowances for credit loss has been recorded were as follows at March 31, 2025 and December 31, 2024, respectively:
 Less than 12 months12 months or moreTotal
 Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
 (in millions)
March 31, 2025
U.S. Treasury and other U.S. government corporations and agencies:
U.S. Treasury and agency obligations$1,790 $(28)$432 $(33)$2,222 $(61)
Mortgage-backed securities1,471 (23)2,200 (405)3,671 (428)
Tax-exempt municipal securities71 (1)393 (23)464 (24)
Mortgage-backed securities:
Residential42 (1)341 (54)383 (55)
Commercial108 (1)930 (71)1,038 (72)
Asset-backed securities327 (3)388 (15)715 (18)
Corporate debt securities1,784 (25)4,104 (480)5,888 (505)
Total debt securities$5,593 $(82)$8,788 $(1,081)$14,381 $(1,163)
December 31, 2024
U.S. Treasury and other U.S. government corporations and agencies:
U.S. Treasury and agency obligations$2,343 $(68)$456 $(42)$2,799 $(110)
Mortgage-backed securities1,766 (50)2,203 (459)3,969 (509)
Tax-exempt municipal securities97 (1)405 (21)502 (22)
Mortgage-backed securities:
Residential130 (2)343 (62)473 (64)
Commercial58 (1)992 (84)1,050 (85)
Asset-backed securities419 (5)436 (19)855 (24)
Corporate debt securities2,385 (51)4,269 (544)6,654 (595)
Total debt securities$7,198 $(178)$9,104 $(1,231)$16,302 $(1,409)
Schedule of Gains (Losses) Related to Investment Securities Included Within Investment Income
The detail of gains (losses) related to investment securities and included within investment income was as follows for the three months ended March 31, 2025 and 2024:
 Three months ended March 31,
 20252024
 (in millions)
Gross gains on investment securities$5 $2 
Gross losses on investment securities(3)(1)
Net recognized gains on investment securities$2 $1 
Schedule of Contractual Maturities of Debt Securities Available for Sale
The contractual maturities of debt securities available for sale at March 31, 2025, regardless of their balance sheet classification, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
Amortized
Cost		Fair
Value
 (in millions)
Due within one year$988 $985 
Due after one year through five years5,344 5,212 
Due after five years through ten years4,339 4,112 
Due after ten years1,163 962 
Mortgage and asset-backed securities7,591 7,027 
Total debt securities$19,425 $18,298