Accounts Receivable, Net - Amounts (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Receivables [Abstract] | ||
| Noninsurance customer receivables | $ 15,097 | $ 14,707 |
| Pharmaceutical manufacturer receivables | 13,940 | 12,437 |
| Insurance customer receivables | 1,545 | 1,385 |
| Other receivables | 218 | 239 |
| Total | $ 30,800 | $ 28,768 |
| X | ||||||||||
- Definition Receivables due from customers under insurance contracts. No definition available.
|
| X | ||||||||||
- Definition Receivables due from customers that are not under insurance contracts. These include pharmacy sales and fees due from employer clients. No definition available.
|
| X | ||||||||||
- Definition Receivables due from pharmaceutical manufacturers related to rebate contracts. No definition available.
|
| X | ||||||||||
- Definition Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|