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v3.22.4

Investments (Tables) | 12 Months Ended
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Dec. 31, 2022
Short-Term and Long-Term Investments [Table Text Block] | A summary of debt securities by major security type is as follows:
(in millions) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
December 31, 2022 |  |  |  |  |  |  |  |
Debt securities - available-for-sale: |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | $ | 4,093 |  |  | $ | 1 |  |  | $ | (285) |  |  | $ | 3,809 |
State and municipal obligations |  | 7,702 |  |  | 25 |  |  | (479) |  |  | 7,248 |
Corporate obligations |  | 23,675 |  |  | 17 |  |  | (1,798) |  |  | 21,894 |
U.S. agency mortgage-backed securities |  | 7,379 |  |  | 15 |  |  | (808) |  |  | 6,586 |
Non-U.S. agency mortgage-backed securities |  | 3,077 |  |  | 1 |  |  | (294) |  |  | 2,784 |
Total debt securities - available-for-sale |  | 45,926 |  |  | 59 |  |  | (3,664) |  |  | 42,321 |
Debt securities - held-to-maturity: |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | 578 |  |  | — |  |  | (14) |  |  | 564 |
State and municipal obligations |  | 29 |  |  | — |  |  | (3) |  |  | 26 |
Corporate obligations |  | 89 |  |  | — |  |  | — |  |  | 89 |
Total debt securities - held-to-maturity |  | 696 |  |  | — |  |  | (17) |  |  | 679 |
Total debt securities |  | $ | 46,622 |  |  | $ | 59 |  |  | $ | (3,681) |  |  | $ | 43,000 |
December 31, 2021 |  |  |  |  |  |  |  |
Debt securities - available-for-sale: |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | $ | 3,206 |  |  | $ | 23 |  |  | $ | (31) |  |  | $ | 3,198 |
State and municipal obligations |  | 6,829 |  |  | 297 |  |  | (20) |  |  | 7,106 |
Corporate obligations |  | 20,947 |  |  | 372 |  |  | (145) |  |  | 21,174 |
U.S. agency mortgage-backed securities |  | 5,868 |  |  | 88 |  |  | (55) |  |  | 5,901 |
Non-U.S. agency mortgage-backed securities |  | 2,819 |  |  | 42 |  |  | (23) |  |  | 2,838 |
Total debt securities - available-for-sale |  | 39,669 |  |  | 822 |  |  | (274) |  |  | 40,217 |
Debt securities - held-to-maturity: |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | 511 |  |  | 2 |  |  | (2) |  |  | 511 |
State and municipal obligations |  | 30 |  |  | 2 |  |  | — |  |  | 32 |
Corporate obligations |  | 100 |  |  | — |  |  | — |  |  | 100 |
Total debt securities - held-to-maturity |  | 641 |  |  | 4 |  |  | (2) |  |  | 643 |
Total debt securities |  | $ | 40,310 |  |  | $ | 826 |  |  | $ | (276) |  |  | $ | 40,860 |
Investments by Contractual Maturity [Table Text Block] | The amortized cost and fair value of debt securities as of December 31, 2022, by contractual maturity, were as follows:
|  | Available-for-Sale |  | Held-to-Maturity
(in millions) |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due in one year or less |  | $ | 4,713 |  |  | $ | 4,682 |  |  | $ | 374 |  |  | $ | 369 |
Due after one year through five years |  | 13,135 |  |  | 12,404 |  |  | 265 |  |  | 256 |
Due after five years through ten years |  | 12,210 |  |  | 10,897 |  |  | 37 |  |  | 36 |
Due after ten years |  | 5,412 |  |  | 4,968 |  |  | 20 |  |  | 18 |
U.S. agency mortgage-backed securities |  | 7,379 |  |  | 6,586 |  |  | — |  |  | — |
Non-U.S. agency mortgage-backed securities |  | 3,077 |  |  | 2,784 |  |  | — |  |  | — |
Total debt securities |  | $ | 45,926 |  |  | $ | 42,321 |  |  | $ | 696 |  |  | $ | 679 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value | The fair value of available-for-sale debt securities with gross unrealized losses by major security type and length of time that individual securities have been in a continuous unrealized loss position were as follows:
|  | Less Than 12 Months |  | 12 Months or Greater |  | Total
(in millions) |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | $ | 2,007 |  |  | $ | (96) |  |  | $ | 1,290 |  |  | $ | (189) |  |  | $ | 3,297 |  |  | $ | (285) |
State and municipal obligations |  | 4,630 |  |  | (288) |  |  | 1,178 |  |  | (191) |  |  | 5,808 |  |  | (479) |
Corporate obligations |  | 13,003 |  |  | (893) |  |  | 6,637 |  |  | (905) |  |  | 19,640 |  |  | (1,798) |
U.S. agency mortgage-backed securities |  | 3,561 |  |  | (345) |  |  | 2,239 |  |  | (463) |  |  | 5,800 |  |  | (808) |
Non-U.S. agency mortgage-backed securities |  | 1,698 |  |  | (128) |  |  | 976 |  |  | (166) |  |  | 2,674 |  |  | (294) |
Total debt securities - available-for-sale |  | $ | 24,899 |  |  | $ | (1,750) |  |  | $ | 12,320 |  |  | $ | (1,914) |  |  | $ | 37,219 |  |  | $ | (3,664) |
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
U.S. government and agency obligations |  | $ | 1,976 |  |  | $ | (18) |  |  | $ | 249 |  |  | $ | (13) |  |  | $ | 2,225 |  |  | $ | (31) |
State and municipal obligations |  | 1,386 |  |  | (19) |  |  | 31 |  |  | (1) |  |  | 1,417 |  |  | (20) |
Corporate obligations |  | 9,357 |  |  | (130) |  |  | 376 |  |  | (15) |  |  | 9,733 |  |  | (145) |
U.S. agency mortgage-backed securities |  | 3,078 |  |  | (52) |  |  | 116 |  |  | (3) |  |  | 3,194 |  |  | (55) |
Non-U.S. agency mortgage-backed securities |  | 1,321 |  |  | (18) |  |  | 114 |  |  | (5) |  |  | 1,435 |  |  | (23) |
Total debt securities - available-for-sale |  | $ | 17,118 |  |  | $ | (237) |  |  | $ | 886 |  |  | $ | (37) |  |  | $ | 18,004 |  |  | $ | (274) |

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