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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Total |  |  |  |
Balance at beginning of period | $ 342 | $ 234 | $ 176 | $ 193
Purchases | 626 | 555 | 1,070 | 893
Sales | (970) | (764) | (1,596) | (1,334)
Issuances | 0 | (1) | (2) | (1)
Settlements | 125 | 113 | 168 | 145
Transfers into Level 3 | 271 | 185 | 484 | 437
Transfers out of Level 3 | (93) | (42) | (181) | (98)
Balance at end of period | 450 | 423 | 450 | 423
Cost of goods sold |  |  |  |
Total |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | 149 | 143 | 331 | 188
Readily Marketable Inventories |  |  |  |
Readily Marketable Inventories |  |  |  |
Balance at beginning of period | 619 | 633 | 231 | 246
Purchases | 668 | 626 | 1,346 | 1,325
Sales | (970) | (764) | (1,596) | (1,334)
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 277 | 189 | 547 | 465
Transfers out of Level 3 | (148) | (57) | (246) | (113)
Balance at end of period | 596 | 772 | 596 | 772
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | (9) | (11) | 5 | (6)
Readily Marketable Inventories | Cost of goods sold |  |  |  |
Readily Marketable Inventories |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | 150 | 145 | 314 | 183
Derivatives, Net |  |  |  |
Derivatives, Net |  |  |  |
Balance at beginning of period | (16) | (2) | (24) | (6)
Purchases | 0 | 0 | 2 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | (1) | (2) | (1)
Settlements | 18 | 0 | 0 | 0
Transfers into Level 3 | 7 | (2) | 10 | 0
Transfers out of Level 3 | (12) | 0 | (2) | 0
Balance at end of period | (13) | (14) | (13) | (14)
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | 96 | 63 | 169 | 99
Derivatives, Net | Cost of goods sold |  |  |  |
Derivatives, Net |  |  |  |
Total gains and losses (realized/unrealized) included in cost of goods sold | (10) | (9) | 3 | (7)
Trade Accounts Receivable/ Payable, Net |  |  |  |
Trade Accounts Receivable/ Payable, Net |  |  |  |
Balance at beginning of period | (261) | (397) | (31) | (47)
Purchases | (42) | (71) | (278) | (432)
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 107 | 113 | 168 | 145
Transfers into Level 3 | (13) | (2) | (73) | (28)
Transfers out of Level 3 | 67 | 15 | 67 | 15
Balance at end of period | (133) | (335) | (133) | (335)
Total |  |  |  |
Changes in unrealized gains (losses) relating to Level 3 assets and liabilities | 8 | 0 | 13 | 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 | $ 9 | $ 7 | $ 14 | $ 12

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