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OTHER FINANCIAL INFORMATION - Accounts Receivable, Net (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Financial Information [Abstract]
Accounts receivable	$ 5,284	$ 5,560
Less: chargebacks	591	552
Less: cash discounts and other	70	72
Less: allowances for credit losses	57	44
Accounts receivable, net	$ 4,566	$ 4,892

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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