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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2023
Fair Value Disclosures [Abstract] |
Fair Value Measurement Inputs and Valuation Techniques | 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 financial assets and liabilities as of March 31, 2023 and December 31, 2022:
|  |  | March 31, 2023 |  | December 31, 2022
| Input Level |  | Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
|  |  | (Dollars in millions)
Equity securities(1) | 1 |  | $ | 3 |  |  | 3 |  |  | 22 |  |  | 22 |
Long-term debt, excluding finance lease and other obligations | 2 |  | 19,590 |  |  | 13,439 |  |  | 20,255 |  |  | 17,309 |
Indemnifications related to the sale of the Latin American business | 3 |  | 86 |  |  | 86 |  | 86 |  |  | 86 |
______________________________________________________________________ (1)For the three months ended March 31, 2023, we recognized $19 million of loss on equity securities in other (expense) income, net in our consolidated statements of operations.
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share |
| As of March 31, 2023 |  | As of December 31, 2022
| Net Asset Value
| (Dollars in millions)
Investment in limited partnership(1) | $ | 24 |  |  | 85 |
______________________________________________________________________ (1)For the three months ended March 31, 2023, we recognized $61 million of loss on investment, reflected in other (expense) income, net in our consolidated statements of operations. For the three months ended March 31, 2022, we recognized $66 million of gain on investment, reflected in other (expense) income, 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=123594938&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 https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258 + Details
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