Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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-Publisher FASB

-Name Accounting Standards Codification

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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-Name Regulation S-X (SX)

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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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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	$ 19,735us-gaap_DebtInstrumentFairValue		$ 11,660us-gaap_DebtInstrumentFairValue
Recorded book values of total long-term debt, excluding capitalized lease obligations	19,155us-gaap_LongTermDebtNoncurrent		11,278us-gaap_LongTermDebtNoncurrent
Additions to long-term debt	8,000	5,500
Floating-Rate Notes Due 2018 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	500
Debt maturity	Mar. 01, 2018
Floating-Rate Notes Due 2022 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	500
Debt maturity	Mar. 06, 2022
1.305% Notes Due 2018 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	1,600
Interest rate	1.305%
Debt maturity	Mar. 06, 2018
1.912% Notes Due 2020 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	1,500
Interest rate	1.912%
Debt maturity	Mar. 06, 2020
2.397% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	1,150
Interest rate	2.397%
Debt maturity	Mar. 06, 2022
2.709% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	1,750
Interest rate	2.709%
Debt maturity	Mar. 06, 2025
3.567% Notes Due 2045 [Member]
Debt Instrument [Line Items]
Additions to long-term debt	1,000
Interest rate	3.567%
Debt maturity	Mar. 06, 2045
Level 1 [Member]
Debt Instrument [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	19,226
Level 2 [Member]
Debt Instrument [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	446
Level 3 [Member]
Debt Instrument [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	$ 63