Long-Term Debt (Detail) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
$2,000 Credit Facility	$ 0	$ 0
Other	113,000,000	122,000,000
Long-term debt	4,107,000,000	3,771,000,000
Less current portion	(300,000,000)	(324,000,000)
Long-term debt, noncurrent	3,807,000,000	3,447,000,000
Multicurrency revolving credit agreement, aggregate effective borrowings	2,000,000,000
Commercial Paper
Debt Instrument [Line Items]
Commercial paper, average interest rate of 0.6% at December 31, 2015	$ 938,000,000	1,072,000,000
Senior notes, weighted average interest rate	0.60%
Series G Notes, interest rate of 5.8%, face amount of $316, maturing November 10, 2015 (effective interest rate of 6.6%)
Debt Instrument [Line Items]
Senior Notes	$ 0	314,000,000
Debt instrument, stated interest rate	5.80%
Senior Notes, face amount	$ 316,000,000
Senior notes, effective interest rate	6.60%
Series H Notes, interest rate of 6.2%, face amount of $289, maturing June 15, 2016 (effective interest rate of 6.3%)
Debt Instrument [Line Items]
Senior Notes	$ 289,000,000	289,000,000
Debt instrument, stated interest rate	6.20%
Senior Notes, face amount	$ 289,000,000
Senior notes, effective interest rate	6.30%
Series I Notes, interest rate of 6.4%, face amount of $293, maturing June 15, 2017 (effective interest rate of 6.5%)
Debt Instrument [Line Items]
Senior Notes	$ 293,000,000	293,000,000
Debt instrument, stated interest rate	6.40%
Senior Notes, face amount	$ 293,000,000
Senior notes, effective interest rate	6.50%
Series K Notes, interest rate of 3.0%, face amount of $600, maturing March 1, 2019 (effective interest rate of 4.4%)
Debt Instrument [Line Items]
Senior Notes	$ 595,000,000	594,000,000
Debt instrument, stated interest rate	3.00%
Senior Notes, face amount	$ 600,000,000
Senior notes, effective interest rate	4.40%
Series L Notes, interest rate of 3.3%, face amount of $350, maturing September 15, 2022 (effective interest rate of 3.4%)
Debt Instrument [Line Items]
Senior Notes	$ 348,000,000	347,000,000
Debt instrument, stated interest rate	3.30%
Senior Notes, face amount	$ 350,000,000
Senior notes, effective interest rate	3.40%
Series M Notes, interest rate of 3.4%, face amount of $350, maturing October 15, 2020 (effective interest rate of 3.6%)
Debt Instrument [Line Items]
Senior Notes	$ 347,000,000	346,000,000
Debt instrument, stated interest rate	3.40%
Senior Notes, face amount	$ 350,000,000
Senior notes, effective interest rate	3.60%
Series N Notes, interest rate of 3.1%, face amount of $400, maturing October 15, 2021 (effective interest rate of 3.4%)
Debt Instrument [Line Items]
Senior Notes	$ 395,000,000	$ 394,000,000
Debt instrument, stated interest rate	3.10%	3.10%
Senior Notes, face amount	$ 400,000,000	$ 400,000,000
Senior notes, effective interest rate	3.40%
Series O Notes, interest rate of 2.9%, face amount of $450, maturing March 1, 2021 (effective interest rate of 3.1%)
Debt Instrument [Line Items]
Senior Notes	$ 446,000,000	0
Debt instrument, stated interest rate	2.90%
Senior Notes, face amount	$ 450,000,000
Senior notes, effective interest rate	3.10%
Series P Notes, interest rate of 3.8%, face amount of $350, maturing October 1, 2025 (effective interest rate of 4.0%)
Debt Instrument [Line Items]
Senior Notes	$ 343,000,000	$ 0
Debt instrument, stated interest rate	3.80%
Senior Notes, face amount	$ 350,000,000
Senior notes, effective interest rate	4.00%

Long-term Debt and Capital Lease Obligations, Other

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Carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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 carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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-Section H

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Weighted average interest rate of long-term debt outstanding.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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