Accounts Receivable, Net - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Noninsurance customer receivables	$ 5,522	$ 5,143
Pharmaceutical manufacturer receivable	3,631	3,439
Insurance customer receivables	2,839	2,321
Other receivables	359	334
Total	12,351	11,237
Accounts receivable, net classified as assets of business held for sale	(616)	(521)
Accounts receivable, net per Consolidated Balance Sheets	11,735	10,716
Receivables from service contracts with customers	$ 222	$ 285

Receivables due from customers under insurance contracts.

No definition available.

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- Definition

Receivables due from customers that are not under insurance contracts. These include pharmacy sales and fees due from employer clients.

+ References

No definition available.

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- Definition

Receivables that are considered non-insurance customer receivables under ASC 606 because these revenues are compensation for pharmacy services.

+ References

No definition available.

+ Details

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- Definition

Receivables due from pharmaceutical manufacturers related to rebate contracts.

+ References

No definition available.

+ Details

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- Definition

Receivables, Net, Current, Including Disposal Groups

+ References

No definition available.

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- 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.

+ References

No definition available.

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- Definition

Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

+ References

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- References

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- 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.

+ References

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