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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2021
Fair Value Measurements [Abstract] |
Carrying Value and Fair Value of Debt | A summary of the carrying value and fair value of debt as of September 30, 2021 and December 31, 2020 is as follows:
| September 30, 2021 |  | December 31, 2020
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Senior notes and debentures | $ | 76,950 |  |  | $ | 85,880 |  |  | $ | 72,671 |  |  | $ | 84,163 |
Credit facilities | $ | 11,422 |  |  | $ | 11,428 |  |  | $ | 10,081 |  |  | $ | 10,063 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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