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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2023
Fair Value Disclosures [Abstract] |
Schedule of the Three Input Levels in the Hierarchy of Fair Value Measurements | The three input levels in the hierarchy of fair value measurements are defined by the FASB generally as follows:
Input Level |  | Description of Input
Level 1 |  | Observable inputs such as quoted market prices in active markets.
Level 2 |  | Inputs other than quoted prices in active markets that are either directly or indirectly observable.
Level 3 |  | Unobservable inputs in which little or no market data exists.
Schedule of Carrying Amounts and Estimated Fair Values of Financial Assets and Liabilities | The following table presents the carrying amounts and estimated fair values of our following financial assets and liabilities as of September 30, 2023 and December 31, 2022:
|  |  | September 30, 2023 |  | December 31, 2022
| Input Level |  | Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
|  |  | (Dollars in millions)
Equity securities(1) | 1 |  | $ | — |  |  | — |  |  | 22 |  |  | 22 |
Long-term debt, excluding finance lease and other obligations | 2 |  | 19,604 |  |  | 14,163 |  |  | 20,255 |  |  | 17,309 |
Indemnifications related to the sale of the Latin American business(2) | 3 |  | 86 |  |  | 86 |  | 86 |  |  | 86 |
______________________________________________________________________ (1)For the nine months ended September 30, 2023, we recognized $22 million of loss on equity securities in other expense, net in our consolidated statements of operations, with no change in value recognized for the three months ended September 30, 2023. For both the three and nine months ended September 30, 2022 we recognized $83 million of loss on equity securities in other expense, net in our consolidated statements of operations. (2)Nonrecurring fair value is measured as of August 1, 2022.
Schedule of Fair Value, Investments, Entities that Calculate Net Asset Value Per Share |
| As of September 30, 2023 |  | As of December 31, 2022
| Net Asset Value
| (Dollars in millions)
Investment in limited partnership(1) | $ | 11 |  |  | 85 |
______________________________________________________________________ (1)For the three and nine months ended September 30, 2023, we recognized a $15 million and $74 million loss on investment, respectively, reflected in other expense, net in our consolidated statements of operations. For the three and nine months ended September 30, 2022, we recognized $43 million and $114 million, respectively, of loss on investment, reflected in other expense, net in our consolidated statements of operations.

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
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- Definition Tabular disclosure of investments in certain entities that calculate net asset value per share or equivalent measured at fair value on a recurring or nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-6A + Details
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