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Derivative financial instruments | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivative financial instruments | DERIVATIVE FINANCIAL INSTRUMENTS Our operations in foreign countries expose us to market risk associated with foreign currency exchange rate fluctuations between the U.S. dollar and various foreign currencies, primarily the Euro. In order to manage this risk, we may hedge a portion of our foreign currency exposures related to outstanding monetary assets and liabilities as well as forecasted product sales using foreign currency exchange forward or option contracts. In general, the market risk related to these contracts is offset by corresponding gains and losses on the hedged transactions. The credit risk associated with these contracts is driven by changes in interest and currency exchange rates and, as a result, varies over time. By working only with major banks and closely monitoring current market conditions, we seek to limit the risk that counterparties to these contracts may be unable to perform. We also seek to limit our risk of loss by entering into contracts that permit net settlement at maturity. Therefore, our overall risk of loss in the event of a counterparty default is limited to the amount of any unrecognized gains on outstanding contracts (i.e., those contracts that have a positive fair value) at the date of default. We do not enter into derivative contracts for trading purposes. We hedge our exposure to foreign currency exchange rate fluctuations for certain monetary assets and liabilities of our entities that are denominated in a non-functional currency. The derivative instruments we use to hedge this exposure are not designated as hedges, and as a result, changes in their fair value are recorded in Other income (expense), net, on our Consolidated Statements of Income. We hedge our exposure to foreign currency exchange rate fluctuations for forecasted product sales that are denominated in a non-functional currency. The derivative instruments we use to hedge this exposure are designated as cash flow hedges and have maturities of 18 months or less. Upon executing a hedging contract and quarterly thereafter, we assess prospective hedge effectiveness using a regression analysis which calculates the change in cash flow as a result of the hedge instrument. On a quarterly basis, we assess retrospective hedge effectiveness using a dollar offset approach. We exclude time value from our effectiveness testing and recognize changes in the time value of the hedge in Other income (expense), net, on our Consolidated Statements of Income. The effective component of our hedge is recorded as an unrealized gain or loss on the hedging instrument in AOCI within Stockholders’ equity on our Consolidated Balance Sheets and the gains or losses are reclassified into product sales when the hedged transactions affect earnings. The majority of gains and losses related to the hedged forecasted transactions reported in AOCI at December 31, 2017 are expected to be reclassified to product sales within 12 months. The cash flow effects of our derivative contracts for the three years ended December 31, 2017, 2016 and 2015 are included within Net cash provided by operating activities on our Consolidated Statements of Cash Flows. We had notional amounts on foreign currency exchange contracts outstanding of $2.8 billion and $6.2 billion at December 31, 2017 and 2016, respectively. While all of our derivative contracts allow us the right to offset assets or liabilities, we have presented amounts on a gross basis. Under the International Swap Dealers Association, Inc. master agreements with the respective counterparties of the foreign currency exchange contracts, subject to applicable requirements, we are allowed to net settle transactions of the same currency with a single net amount payable by one party to the other. The following table summarizes the classification and fair values of derivative instruments on our Consolidated Balance Sheets (in millions):
|  | December 31, 2017
|  | Asset Derivatives |  | Liability Derivatives
|  | Classification |  | Fair Value |  | Classification |  | Fair Value
Derivatives designated as hedges: |  |  |  |  |  |  |  |
Foreign currency exchange contracts |  | Other current assets |  | $ | 2 |  |  | Other accrued liabilities |  | $ | (89 | )
Foreign currency exchange contracts |  | Other long-term assets |  | 1 |  |  | Other long-term obligations |  | (3 | )
Total derivatives designated as hedges |  |  |  | 3 |  |  |  |  | (92 | )
Derivatives not designated as hedges: |  |  |  |  |  |  |  |  |  |
Foreign currency exchange contracts |  | Other current assets |  | 10 |  |  | Other accrued liabilities |  | (1 | )
Total derivatives not designated as hedges |  |  |  | 10 |  |  |  |  | (1 | )
Total derivatives |  |  |  | $ | 13 |  |  |  |  | $ | (93 | )
|  | December 31, 2016
|  | Asset Derivatives |  | Liability Derivatives
|  | Classification |  | Fair Value |  | Classification |  | Fair Value
Derivatives designated as hedges: |  |  |  |  |  |  |  |
Foreign currency exchange contracts |  | Other current assets |  | $ | 225 |  |  | Other accrued liabilities |  | $ | (1 | )
Foreign currency exchange contracts |  | Other long-term assets |  | 20 |  |  | Other long-term obligations |  | — |
Total derivatives designated as hedges |  |  |  | 245 |  |  |  |  | (1 | )
Derivatives not designated as hedges: |  |  |  |  |  |  |  |
Foreign currency exchange contracts |  | Other current assets |  | 81 |  |  | Other accrued liabilities |  | (34 | )
Foreign currency exchange contracts |  | Other long-term assets |  | 10 |  |  | Other long-term obligations |  | (2 | )
Total derivatives not designated as hedges |  |  |  | 91 |  |  |  |  | (36 | )
Total derivatives |  |  |  | $ | 336 |  |  |  |  | $ | (37 | )
The following table summarizes the effect of our foreign currency exchange contracts on our Consolidated Financial Statements (in millions):
|  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Derivatives designated as hedges: |  |  |  |  |  |
Gains (losses) recognized in AOCI (effective portion) |  | $ | (315 | ) |  | $ | 5 |  |  | $ | 410 |
Gains (losses) reclassified from AOCI into product sales (effective portion) |  | $ | (28 | ) |  | $ | 73 |  |  | $ | 602 |
Gains (losses) recognized in Other income (expense), net (ineffective portion and amounts excluded from effectiveness testing) |  | $ | 41 |  |  | $ | (32 | ) |  | $ | 13 |
Derivatives not designated as hedges: |  |  |  |  |  |  |  |  |
Gains (losses) recognized in Other income (expense), net |  | $ | (113 | ) |  | $ | 206 |  |  | $ | 117 |
From time to time, we may discontinue cash flow hedges, and as a result, record related amounts in Other income (expense), net, on our Consolidated Statements of Income. There were no material amounts recorded in Other income (expense), net, for the years ended December 31, 2017, 2016 and 2015 as a result of the discontinuance of cash flow hedges. As of December 31, 2017 and 2016, we held one type of financial instrument, which was derivative contracts related to foreign currency exchange contracts. The following table summarizes the potential effect of offsetting derivatives by type of financial instrument on our Consolidated Balance Sheets (in millions):
As of December 31, 2017
Offsetting of Derivative Assets/Liabilities
|  |  |  |  |  |  |  | Gross Amounts Not Offset on the Consolidated Balance Sheets |  |
Description |  | Gross Amounts of Recognized Assets/Liabilities |  | Gross Amounts Offset on the Consolidated Balance Sheets |  | Amounts of Assets/Liabilities Presented on the Consolidated Balance Sheets |  | Derivative Financial Instruments |  | Cash Collateral Received/Pledged |  | Net Amount (Legal Offset)
Derivative assets |  | $ | 13 |  |  | $ | — |  |  | $ | 13 |  |  | $ | (8 | ) |  | $ | — |  |  | $ | 5 |
Derivative liabilities |  | (93 | ) |  | — |  |  | (93 | ) |  | 8 |  |  | — |  |  | (85 | )
As of December 31, 2016
Offsetting of Derivative Assets/Liabilities
|  |  |  |  |  |  |  | Gross Amounts Not Offset on the Consolidated Balance Sheets |  |
Description |  | Gross Amounts of Recognized Assets/Liabilities |  | Gross Amounts Offset on the Consolidated Balance Sheets |  | Amounts of Assets/Liabilities Presented on the Consolidated Balance Sheets |  | Derivative Financial Instruments |  | Cash Collateral Received/Pledged |  | Net Amount (Legal Offset)
Derivative assets |  | $ | 336 |  |  | $ | — |  |  | $ | 336 |  |  | $ | (37 | ) |  | $ | — |  |  | $ | 299 |
Derivative liabilities |  | (37 | ) |  | — |  |  | (37 | ) |  | 37 |  |  | — |  |  | — |
May 2016 Convertible Senior Notes and Convertible Note Hedges In March 2016, we exercised our option to elect cash for the settlement of the conversion value in excess of the principal amount (the conversion spread) of our remaining convertible senior notes due in May 2016 (the Convertible Notes) and for the related convertible note hedges. Until our cash settlement election, the conversion spread of the Convertible Notes and the convertible note hedges met the applicable criteria for equity classification and were therefore recorded in Stockholders’ equity on our Consolidated Balance Sheets. Upon our cash settlement election, we reclassified $733 million of the fair value of the conversion spread from Stockholders’ equity to Current portion of long-term debt and other obligations, net, and reclassified $733 million of the fair value of the convertible note hedges from Stockholders’ equity to Prepaid and other current assets on our Consolidated Balance Sheets. Upon maturity of the Convertible Notes in 2016, we settled the conversion spread and the convertible note hedges in cash at $861 million, respectively, and recorded a loss of $128 million on the conversion spread and a gain of $128 million on the convertible note hedges on our Consolidated Statements of Income.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959 Reference 4: 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=64837297&loc=SL5624163-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624177-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624258-113959 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708775-113959 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708773-113959 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624181-113959 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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