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Derivative Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Outstanding Foreign Currency Forward Contracts | The Company had the following outstanding foreign currency forward contracts that were entered into to hedge nonfunctional currency cash flows from forecasted revenues and expenses (in millions):
|  | Currency Denomination |
Foreign Currency |  | December 31, 2017 |  |  | December 31, 2016 |
Norwegian Krone |  | NOK | 4,013 |  |  | NOK | 5,621 |
Japanese Yen |  | JPY | 982 |  |  | JPY | 1,462 |
U.S. Dollar |  | USD | 163 |  |  | USD | 321 |
Euro |  | EUR | 120 |  |  | EUR | 279 |
Danish Krone |  | DKK | 30 |  |  | DKK | 29 |
British Pound Sterling |  | GBP | 11 |  |  | GBP | 1 |
Singapore Dollar |  | SGD | — |  |  | SGD | 2 |
The Company had the following outstanding foreign currency forward contracts that hedge the fair value of nonfunctional currency monetary accounts (in millions):
|  | Currency Denomination |
Foreign Currency |  | December 31, 2017 |  |  | December 31, 2016 |
Russian Ruble |  | RUB | 2,699 |  |  | RUB | 1,893 |
Norwegian Krone |  | NOK | 1,734 |  |  | NOK | 538 |
U.S. Dollar |  | USD | 463 |  |  | USD | 457 |
South African Rand |  | ZAR | 150 |  |  | ZAR | 150 |
Euro |  | EUR | 99 |  |  | EUR | 272 |
Danish Krone |  | DKK | 15 |  |  | DKK | 49 |
British Pound Sterling |  | GBP | 3 |  |  | GBP | 3 |
Singapore Dollar |  | SGD | — |  |  | SGD | 7 |
Canadian Dollar |  | CAD | — |  |  | CAD | 1 |
Derivative Instruments and their Balance Sheet Classifications | The Company has the following fair values of its derivative instruments and their balance sheet classifications (in millions):
Fair Values of Derivative Instruments |
(In millions) |
|  | Asset Derivatives |  |  | Liability Derivatives |
|  | Balance Sheet |  | Fair Value December 31, |  |  | Balance Sheet |  | Fair Value December 31, |
|  | Location |  | 2017 |  |  | 2016 |  |  | Location |  | 2017 |  |  | 2016 |
Derivatives designated as hedging instruments under ASC Topic 815 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Prepaid and other current assets |  | $ | 13 |  |  | $ | 24 |  |  | Accrued liabilities |  | $ | 3 |  |  | $ | 37 |
Foreign exchange contracts |  | Other Assets |  |  | 8 |  |  |  | 6 |  |  | Other Liabilities |  |  | 2 |  |  |  | 11 |
Total derivatives designated as hedging instruments under ASC Topic 815 |  |  |  | $ | 21 |  |  | $ | 30 |  |  |  |  | $ | 5 |  |  | $ | 48 |
Derivatives not designated as hedging instruments under ASC Topic 815 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Prepaid and other current assets |  | $ | 10 |  |  | $ | 32 |  |  | Accrued liabilities |  | $ | 5 |  |  | $ | 29 |
Foreign exchange contracts |  | Other Assets |  |  | 2 |  |  |  | — |  |  | Other Liabilities |  |  | 1 |  |  |  | — |
Total derivatives not designated as hedging instruments under ASC Topic 815 |  |  |  | $ | 12 |  |  | $ | 32 |  |  |  |  | $ | 6 |  |  | $ | 29 |
Total derivatives |  |  |  | $ | 33 |  |  | $ | 62 |  |  |  |  | $ | 11 |  |  | $ | 77 |
Effect of Derivative Instruments on Consolidated Statements of Income (Loss) |
The Effect of Derivative Instruments on the Consolidated Statements of Income (Loss) ($ in millions) |
Derivatives Designated as Hedging Instruments under ASC Topic 815 |  | Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion) (a) |  |  | Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) |  | Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) |  |  | Location of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) |  | Amount of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) (b) |
|  | Years Ended December 31, |  |  |  |  | Years Ended December 31, |  |  |  |  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |  |  |  |  | 2017 |  |  | 2016 |  |  |  |  | 2017 |  |  | 2016 |
|  |  |  |  |  |  |  |  |  | Revenue |  |  | 8 |  |  |  | 5 |  |  | Cost of revenue |  |  | 7 |  |  |  | (21 | )
Foreign exchange contracts |  |  | 56 |  |  |  | 45 |  |  | Cost of revenue |  |  | (19 | ) |  |  | (170 | ) |  | Other income (expense), net |  |  | 2 |  |  |  | 8 |
Total |  |  | 56 |  |  |  | 45 |  |  |  |  |  | (11 | ) |  |  | (165 | ) |  |  |  |  | 9 |  |  |  | (13 | )
Derivatives Not Designated as |  | Location of Gain (Loss) |  |  | Amount of Gain (Loss) |
Hedging Instruments under |  | Recognized in Income |  |  | Recognized in Income on |
ASC Topic 815 |  | on Derivatives |  |  | Derivatives |
|  |  |  |  | Years Ended December 31, |
|  |  |  |  | 2017 |  |  | 2016 |
Foreign exchange contracts |  |  | Other income (expense), net |  |  |  | 58 |  |  |  | (33 | )
Total |  |  |  |  |  |  | 58 |  |  |  | (33 | )
(a) | The Company expects that $5 million of the Accumulated Other Comprehensive Income (Loss) will be reclassified into earnings within the next twelve months with an offset by losses from the underlying transactions resulting in no impact to earnings or cash flow.
(b) | The amount of gain (loss) recognized in income represents $7 million and $(21) million related to the ineffective portion of the hedging relationships for the years ended December 31, 2017 and 2016, respectively, and $2 million and $8 million related to the amount excluded from the assessment of the hedge effectiveness for the years ended December 31, 2017 and 2016, respectively.

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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging 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 4B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of gains and losses on derivative instruments included in an entity's trading activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 55 -Paragraph 184 -URI http://asc.fasb.org/extlink&oid=95459573&loc=SL5634876-113961 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4F -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624186-113959 + Details
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