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INCOME TAXES (Tables) | 6 Months Ended
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Jun. 30, 2021
Income Tax Disclosure [Abstract] |
Schedule of Effective Income Tax Rate Reconciliation | The reconciliations of income tax expense with federal income taxes at the statutory rate are as follows (in millions of dollars):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Federal income tax | $ | 67 |  |  | $ | 47 |  |  | $ | 139 |  |  | $ | 82 |
States income taxes, net of federal income tax benefit | 8 |  |  | 7 |  |  | 18 |  |  | 11 |
Stock compensation | (6) |  |  | — |  |  | (7) |  |  | (2) |
Foreign rate difference | 6 |  |  | 4 |  |  | 13 |  |  | 7 |
Net tax benefit related to foreign subsidiaries | — |  |  | (3) |  |  | — |  |  | (88) |
Other, net | 1 |  |  | — |  |  | 1 |  |  | 2 |
Income tax provision | $ | 76 |  |  | $ | 55 |  |  | $ | 164 |  |  | $ | 12 |
Effective tax rate | 23.6 | % |  | 30.2 | % |  | 24.7 | % |  | 3.9 | %

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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