Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
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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.

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The amount of cash received during the period on settlement of a hedge.

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Financing arrangements (Convertible Notes) (Details) - USD ($) $ / shares in Units, shares in Millions		1 Months Ended
	May 01, 2013	Feb. 28, 2013	Dec. 31, 2015	May 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2006
Debt Instrument [Line Items]
Aggregate principal amount of notes issued				$ 3,500,000,000.0	$ 4,500,000,000.0	$ 8,100,000,000
Convertible notes payable [Member] \| 0.375% Convertible Notes Due 2013 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of notes issued							$ 2,500,000,000.0
Stated contractual interest rate on note	0.375%	0.375%					0.375%
Repayments of convertible notes		$ 2,500,000,000
Cash settlement of convertible bond hedge		99,000,000
Class of warrant or right, number of securities called by warrants or rights	32
Exercise price of warrants (in usd per warrant)	$ 104.80
Payments for repurchase of warrants	$ 100,000,000
Carrying amount of equity component of debt			$ 829,000,000
Convertible notes payable [Member] \| 0.375% Convertible Notes Due 2013 [Member] \| Excess conversion value [Member]
Debt Instrument [Line Items]
Repayments of convertible notes		$ 99,000,000