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REVENUE RECOGNITION - Variable Consideration Provisions (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | $ 1,863 | $ 1,813
Current period provisions | 1,256 | 1,300
Payments and credits | (1,227) | (1,222)
Reserve ending balance | 1,892 | 1,891
Discounts and Allowances |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | 222 | 190
Current period provisions | 134 | 147
Payments and credits | (162) | (160)
Reserve ending balance | 194 | 177
Returns |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | 482 | 575
Current period provisions | 19 | 34
Payments and credits | (54) | (56)
Reserve ending balance | 447 | 553
Rebates |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | 944 | 779
Current period provisions | 581 | 602
Payments and credits | (599) | (457)
Reserve ending balance | 926 | 924
Chargebacks |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | 170 | 184
Current period provisions | 471 | 462
Payments and credits | (359) | (483)
Reserve ending balance | 282 | 163
Distribution Fees |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Reserve beginning balance | 45 | 85
Current period provisions | 51 | 55
Payments and credits | (53) | (66)
Reserve ending balance | $ 43 | $ 74

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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