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Notes and Contracts Payable (Tables) | 12 Months Ended
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Dec. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Notes and Contracts Payable |
| December 31, |
| 2021 |  |  | 2020 |
| (dollars in millions) |
2.40% senior unsecured notes due August 15, 2031, effective interest rate of 2.44% | $ | 650 |  |  | $ | — |
4.00% senior unsecured notes due May 15, 2030, effective interest rate of 4.05% |  | 450 |  |  |  | 450 |
4.60% senior unsecured notes due November 15, 2024, effective interest rate of 4.60% |  | 300 |  |  |  | 300 |
4.30% senior unsecured notes due February 1, 2023, effective interest rate of 4.35% |  | 250 |  |  |  | 250 |
Trust deed note due November 1, 2023, collateralized by land and buildings with net book values of $37 and $38 at December 31, 2021 and 2020, respectively, fixed interest rate of 5.26% |  | 8 |  |  |  | 12 |
Other notes and contracts payable with maturities through 2024, weighted-average interest rates of 4.21% and 4.28% at December 31, 2021 and 2020, respectively |  | 4 |  |  |  | 6 |
|  | 1,662 |  |  |  | 1,018 |
Unamortized discounts and debt issuance costs |  | (14 | ) |  |  | (7 | )
| $ | 1,648 |  |  | $ | 1,011 |
Aggregate Annual Maturities of Notes and Contracts Payable | The aggregate annual maturities for notes and contracts payable for the next five years and thereafter, are summarized as follows:
Year | Annual maturities |
| (in millions) |
2022 | $ | 7 |
2023 |  | 255 |
2024 |  | 300 |
2025 |  | — |
2026 |  | — |
Thereafter |  | 1,100 |
| $ | 1,662 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 + Details
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