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Debt and Other Obligations Extinguishment of Debt (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2025 USD ($)
Extinguishment of Debt [Line Items] |  |
Extinguishment of Debt, Amount | $ 1,200 |
Repayments of Other Long-Term Debt | 1,200 | [1]
Gains (losses) on retirement of long-term obligations | 0 |
Securitized Debt [Member] | 2015 Tower Revenue Notes 3.663% due 2045 [Member] |  |
Extinguishment of Debt [Line Items] |  |
Extinguishment of Debt, Amount | 700 |
Repayments of Other Long-Term Debt | 700 | [1]
Gains (losses) on retirement of long-term obligations | 0 |
Securitized Debt [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain] |  |
Extinguishment of Debt [Line Items] |  |
Extinguishment of Debt, Amount | 500 |
Repayments of Other Long-Term Debt | 500 | [1]
Gains (losses) on retirement of long-term obligations | $ 0 |
[1] | Exclusive of accrued interest.

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- Definition Gross amount of debt extinguished. + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481303/470-50-40-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481303/470-50-40-4 + Details
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- Definition Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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