Financial Instruments, Derivatives and Fair Value Measures - Assets And Liabilities At Fair Value On A Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair value, asset and liability measures
Fair Value - Assets	$ 401	$ 295
Fair Value - Liabilities	677	541
Available-for-sale equity securities in an unrealized loss position
Fair value of securities in an unrealized loss position	3,016
Unrealized gross losses	589
Recurring
Fair value, asset and liability measures
Equity securities	3,030	3,780
Interest rate swap derivative financial instruments, assets	261	116
Total Assets	3,431	4,075
Fair value of hedged long-term debt	4,280	4,135
Contingent consideration related to business combinations	162	173
Total Liabilities	4,603	4,410
Recurring \| Foreign currency forward exchange contracts
Fair value, asset and liability measures
Fair Value - Assets	140	179
Fair Value - Liabilities	161	102
Recurring \| Quoted Prices in Active Markets
Fair value, asset and liability measures
Equity securities	3,030	3,780
Total Assets	3,030	3,780
Recurring \| Significant Other Observable Inputs
Fair value, asset and liability measures
Interest rate swap derivative financial instruments, assets	261	116
Total Assets	401	295
Fair value of hedged long-term debt	4,280	4,135
Total Liabilities	4,441	4,237
Recurring \| Significant Other Observable Inputs \| Foreign currency forward exchange contracts
Fair value, asset and liability measures
Fair Value - Assets	140	179
Fair Value - Liabilities	161	102
Recurring \| Significant Unobservable Inputs
Fair value, asset and liability measures
Contingent consideration related to business combinations	162	173
Total Liabilities	$ 162	$ 173

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- References

No definition available.

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

+ References

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-Publisher FASB
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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-Publisher FASB
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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

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-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

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-Publisher FASB
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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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