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INCOME TAXES - Summarized Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Tax |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | $ 160 | $ 144 | $ 148
Additions for tax positions of the current year | 47 | 16 | 17
Additions for tax positions of prior years | 7 | 33 | 20
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | (43) | (24) | (41)
Settlements during the period | (1) | (6) | 0
Lapses of applicable statute of limitations | (3) | (3) | 0
Ending Balance | 167 | 160 | 144
Interest |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | 43 | 50 | 53
Additions for tax positions of the current year | 0 | 0 | 0
Additions for tax positions of prior years | 10 | 14 | 10
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | (8) | (18) | (13)
Settlements during the period | (1) | (3) | 0
Lapses of applicable statute of limitations | 0 | 0 | 0
Ending Balance | 44 | 43 | 50
Penalties |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | 9 | 6 | 6
Additions for tax positions of the current year | 1 | 0 | 0
Additions for tax positions of prior years | 0 | 3 | 0
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | (5) | 0 | 0
Settlements during the period | 0 | 0 | 0
Lapses of applicable statute of limitations | 0 | 0 | 0
Ending Balance | $ 5 | $ 9 | $ 6

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- Definition Unrecognized Tax Benefits Reductions Resulting From Changes Based On Facts And Circumstances + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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