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INCOME TAXES - Summarized Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Tax |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | $ 172 | $ 191 | $ 232
Additions for tax positions of the current year | 24 | 15 | 15
Additions for tax positions of prior years | 45 | 51 | 20
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | (85) | (74) | (67)
Settlements during the period | (6) | (10) | (8)
Lapses of applicable statute of limitations | (2) | (1) | (1)
Ending Balance | 148 | 172 | 191
Interest |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | 42 | 40 | 53
Additions for tax positions of the current year | 0 | 0 | 0
Additions for tax positions of prior years | 21 | 13 | 9
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | (8) | (8) | (23)
Settlements during the period | (2) | (2) | 1
Lapses of applicable statute of limitations | 0 | (1) | 0
Ending Balance | 53 | 42 | 40
Penalties |  |  |
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Beginning Balance | 3 | 4 | 4
Additions for tax positions of the current year | 0 | 0 | 0
Additions for tax positions of prior years | 3 | 0 | 2
Reductions for tax positions of prior years for: |  |  |
Changes based on facts and circumstances | 0 | 0 | (1)
Settlements during the period | 0 | 0 | 0
Lapses of applicable statute of limitations | 0 | (1) | (1)
Ending Balance | $ 6 | $ 3 | $ 4

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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 pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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