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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Location and Fair Value Amounts of Cash Flow Hedges | The following table provides information on the location and fair value amounts of our cash flow hedges as of December 31, 2017 and December 31, 2016:
(in millions) |  | December 31, |  | December 31,
Balance Sheet Location |  | 2017 |  | 2016
Derivatives designated as cash flow hedges: |  |  |  |
Prepaid and other current assets | Foreign exchange forward contracts | $ | 3 |  |  | $ | 3 |
Schedule of Pre-tax Gains (Losses) on Cash Flow Hedges | The following table provides information on the location and amounts of pre-tax gains (losses) on our cash flow hedges for the years ended December 31:
(in millions) | Gain (Loss) Recognized in Accumulated Other Comprehensive Loss (effective portion) |  | Location of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (effective portion) |  | Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income (effective portion)
Cash flow hedges - designated as hedging instruments | 2017 |  | 2016 |  | 2015 |  |  |  | 2017 |  | 2016 |  | 2015
Foreign exchange forward contracts | $ | — |  |  | $ | 3 |  |  | $ | — |  |  | Selling and general expenses |  | $ | 9 |  |  | $ | 4 |  |  | $ | — |
Schedule of Cash Flow Hedges included in AOCI | The activity related to the change in unrealized gains (losses) in accumulated other comprehensive loss was as follows for the years ended December 31:
(in millions) | Year ended December 31,
| 2017 |  | 2016 |  | 2015
Net unrealized gains (losses) on cash flow hedges, net of taxes, beginning of year | $ | 2 |  |  | $ | (1 | ) |  | $ | (1 | )
Change in fair value, net of tax | 9 |  |  | 7 |  |  | — |
Reclassification into earnings, net of tax | (9 | ) |  | (4 | ) |  | — |
Net unrealized gains (losses) on cash flow hedges, net of taxes, end of year | $ | 2 |  |  | $ | 2 |  |  | $ | (1 | )

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- Definition Tabular disclosure of the effective portion of gains and losses on derivative instruments (and nonderivative instruments) designated and qualifying in cash flow hedges recorded in accumulated other comprehensive income (loss) during the term of the hedging relationship and reclassified into earnings during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure for cash flow hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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