Sales Of Receivables (Summary of Cash Proceeds Received from Sale of Receivables) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Net cash received (paid) from equipment and other installment receivables | $ 1,334 | $ (211) | $ 1,472 |
| Equipment Installment | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Net cash received (paid) from equipment and other installment receivables | 1,318 | (1,358) | 648 |
| Cash proceeds received | 12,391 | 10,587 | 10,980 |
| Revolving Receivables Program | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Net cash received (paid) from equipment and other installment receivables | 16 | 1,147 | 1,456 |
| Cash proceeds received | 30,311 | 21,632 | 8,882 |
| Other Sales of Receivables | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Net cash received (paid) from equipment and other installment receivables | $ 0 | $ 0 | $ (632) |