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FAIR VALUE MEASUREMENTS (Tables) | 6 Months Ended
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Jun. 30, 2019
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured and Recorded at Fair Value | Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following (in millions):
|  | June 30, 2019 |  | December 31, 2018
|  | Total |  | Level 1 |  | Level 2 |  | Total |  | Level 1 |  | Level 2
Assets |  |  |  |  |  |  |  |
Mutual funds |  | $ | 1,031 |  |  | $ | 1,031 |  |  | $ | — |  |  | $ | 978 |  |  | $ | 978 |  |  | $ | — |
U.S. Government securities |  | 104 |  |  | — |  |  | 104 |  |  | 105 |  |  | — |  |  | 105 |
Other securities |  | 244 |  |  | 113 |  |  | 131 |  |  | 144 |  |  | 28 |  |  | 116 |
Derivatives |  | 26 |  |  | — |  |  | 26 |  |  | 22 |  |  | — |  |  | 22 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  | 49 |  |  | — |  |  | 49 |  |  | 61 |  |  | — |  |  | 61 |
Assets measured at NAV (a) |  |  |  |  |  |  |  |  |  |  |  |
Other commingled funds |  | 19 |  |  |  |  |  |  | 18 |  |  |  |  |
(a) Net Asset Value (NAV) is the total value of the fund divided by the number of the fund’s shares outstanding.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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