v3.20.2

FAIR VALUE MEASUREMENTS - RECONCILIATION FOR ASSETS AND LIABILITIES MEASURE AT FAIR VALUE USING LEVEL 3 (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Total |  |  |  |
Balance at beginning of period | $ 450 | $ 423 | $ 176 | $ 193
Purchases | 515 | 315 | 1,584 | 1,208
Sales | (814) | (744) | (2,410) | (2,077)
Issuances | (1) | 0 | (3) | (1)
Settlements | 68 | 160 | 236 | 305
Transfers into Level 3 | 195 | 213 | 679 | 648
Transfers out of Level 3 | (281) | (67) | (461) | (165)
Balance at end of period | 366 | 382 | 366 | 382
Cost of goods sold |  |  |  |
Total |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | 234 | 82 | 565 | 271
Readily Marketable Inventories |  |  |  |
Readily Marketable Inventories |  |  |  |
Balance at beginning of period | 596 | 772 | 231 | 246
Purchases | 532 | 329 | 1,877 | 1,654
Sales | (814) | (744) | (2,410) | (2,077)
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 201 | 213 | 748 | 678
Transfers out of Level 3 | (320) | (68) | (566) | (181)
Balance at end of period | 463 | 583 | 463 | 583
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | 174 | 60 | 334 | 160
Readily Marketable Inventories | Cost of goods sold |  |  |  |
Readily Marketable Inventories |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | 268 | 81 | 583 | 263
Derivatives, Net |  |  |  |
Derivatives, Net |  |  |  |
Balance at beginning of period | (13) | (14) | (24) | (6)
Purchases | 2 | 0 | 3 | 0
Sales | 0 | 0 | 0 | 0
Issuances | (1) | 0 | (3) | (1)
Settlements | 15 | 2 | 15 | 2
Transfers into Level 3 | (2) | 1 | 8 | 0
Transfers out of Level 3 | (2) | 0 | (3) | 0
Balance at end of period | (37) | (11) | (37) | (11)
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | (37) | (1) | (33) | (10)
Derivatives, Net | Cost of goods sold |  |  |  |
Derivatives, Net |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | (36) | 0 | (33) | (6)
Trade Accounts Receivable/ Payable, Net |  |  |  |
Trade Accounts Receivable/ Payable, Net |  |  |  |
Balance at beginning of period | (133) | (335) | (31) | (47)
Purchases | (19) | (14) | (296) | (446)
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 53 | 158 | 221 | 303
Transfers into Level 3 | (4) | (1) | (77) | (30)
Transfers out of Level 3 | 41 | 1 | 108 | 16
Balance at end of period | (60) | (190) | (60) | (190)
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | 2 | 0 | 15 | 0
Trade Accounts Receivable/ Payable, Net | Cost of goods sold |  |  |  |
Trade Accounts Receivable/ Payable, Net |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | $ 2 | $ 1 | $ 15 | $ 14

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