Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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The effective interest rate at the end of the reporting period.

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Interest rate stated in the contractual debt agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt and Bank Credit Agreements and Leases (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2012
Debt Instrument [Line Items]
Debt Instrument, Interest Rate at Period End	4.10%	4.60%
Long-term debt	$ 3,346	$ 3,939
Capital lease obligations	30	32
Long-term debt	3,376	3,971
Less payments due within one year	4	603
Long-term debt	3,372	3,368
Notes 5.75 Percent Due 2013
Debt Instrument [Line Items]
Long-term debt	0	600
Debt instrument, interest rate, stated percentage	5.75%
Notes 3.875 Percent Due 2015
Debt Instrument [Line Items]
Long-term debt	413	395
Debt instrument, interest rate, stated percentage	3.875%
Notes 1.9 Percent Due 2016
Debt Instrument [Line Items]
Long-term debt	249	249
Debt instrument, interest rate, stated percentage	1.90%
Notes 7.375 Percent Due 2016
Debt Instrument [Line Items]
Long-term debt	146	146
Debt instrument, interest rate, stated percentage	7.375%
Notes 6.875 Percent Due 2017
Debt Instrument [Line Items]
Long-term debt	74	74
Debt instrument, interest rate, stated percentage	6.875%	6.875%
Notes 6.65 Percent Due 2018
Debt Instrument [Line Items]
Long-term debt	700	700
Debt instrument, interest rate, stated percentage	6.65%
Notes 7.4 Percent Due 2019
Debt Instrument [Line Items]
Long-term debt	198	198
Debt instrument, interest rate, stated percentage	7.40%
Notes 3.6 Percent Due 2020
Debt Instrument [Line Items]
Long-term debt	495	495
Debt instrument, interest rate, stated percentage	3.60%
Non-callable Debentures 9 Percent Due 2021
Debt Instrument [Line Items]
Long-term debt	149	149
Debt instrument, interest rate, stated percentage	9.00%
Notes 2.70 Percent Due 2022
Debt Instrument [Line Items]
Long-term debt	400	400
Debt instrument, interest rate, stated percentage	2.70%		2.70%
Notes 7.70 Percent Due 2038
Debt Instrument [Line Items]
Long-term debt	249	249
Debt instrument, interest rate, stated percentage	7.70%
Notes 5.5 Percent Due 2040
Debt Instrument [Line Items]
Long-term debt	248	248
Debt instrument, interest rate, stated percentage	5.50%
Impact Of Derivatives On Debt
Debt Instrument [Line Items]
Long-term debt	21	31
Other Non US Debt, Weighted Average
Debt Instrument [Line Items]
Long-term debt	$ 4	$ 5
Debt instrument, interest rate, stated percentage	0.70%	3.40%