Sales Of Receivables (Summary of Cash Proceeds Received) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Net cash received from receivables programs | $ (177) | $ (703) | $ 815 | $ (306) |
| Equipment Installment | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Net cash received from receivables programs | (135) | (674) | 724 | (553) |
| Cash proceeds received | 2,779 | 2,532 | 6,577 | 5,406 |
| Revolving Receivables Program | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Net cash received from receivables programs | (42) | (29) | 91 | 247 |
| Cash proceeds received | $ 7,673 | $ 4,672 | $ 15,016 | $ 8,846 |