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Investments of Insurance Subsidiaries | 12 Months Ended
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Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Investments of Insurance Subsidiaries | NOTE 6 — INVESTMENTS OF INSURANCE SUBSIDIARIES A summary of the insurance subsidiaries’ investments at December 31 follows (dollars in millions):
|  | 2021 |
|  | Amortized Cost |  |  | Unrealized Amounts |  |  | Fair Value |
|  | Gains |  |  | Losses |
Debt securities |  | $ | 400 |  |  | $ | 18 |  |  | $ | (2 | ) |  | $ | 416 |
Money market funds and other |  |  | 125 |  |  |  | — |  |  |  | — |  |  |  | 125 |
|  | $ | 525 |  |  | $ | 18 |  |  | $ | (2 | ) |  |  | 541 |
Amounts classified as current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (103 | )
Investment carrying value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 438 |
|  | 2020 |
|  | Amortized Cost |  |  | Unrealized Amounts |  |  | Fair Value |
|  | Gains |  |  | Losses |
Debt securities |  | $ | 384 |  |  | $ | 32 |  |  | $ | — |  |  | $ | 416 |
Money market funds and other |  |  | 88 |  |  |  | — |  |  |  | — |  |  |  | 88 |
|  | $ | 472 |  |  | $ | 32 |  |  | $ | — |  |  |  | 504 |
Amounts classified as current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (116 | )
Investment carrying value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 388 |
At December 31, 2021 and 2020, the investments in debt securities of our insurance subsidiaries were classified as “available-for-sale.” Changes in unrealized gains and losses are recorded as adjustments to other comprehensive income (loss). Scheduled maturities of investments in debt securities at December 31, 2021 were as follows (dollars in millions):
|  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 3 |  |  | $ | 3 |
Due after one year through five years |  |  | 128 |  |  |  | 135 |
Due after five years through ten years |  |  | 176 |  |  |  | 183 |
Due after ten years |  |  | 93 |  |  |  | 95 |
|  | $ | 400 |  |  | $ | 416 |
The average expected maturity of the investments in debt securities at December 31, 2021 was 6.1 years, compared to the average scheduled maturity of 9.5 years. Expected and scheduled maturities may differ because the issuers of certain securities have the right to call, prepay or otherwise redeem such obligations prior to their scheduled maturity date.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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