Percentage of face value at which senior notes are sold.

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

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+ Details

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

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Debt (Details 2) - USD ($) $ in Millions	1 Months Ended		9 Months Ended
Debt (Details 2) - USD ($) $ in Millions	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Aug. 31, 2015	Jan. 31, 2015	Dec. 31, 2014
Debt
Repayments of senior notes			$ 549
Outstanding letters of credit	$ 44		44				$ 87
Senior unsecured 364-day revolving credit facility
Debt
Borrowing capacity	1,000		$ 1,000			$ 1,000
Basis Variable interest rate used			Eurocurrency Rate or the Base Rate
Credit agreements and commercial paper program
Debt
Total borrowings			$ 37,100	$ 55,600
Total repayments			36,900	$ 56,300
Senior notes
Debt
Debt instrument face value	9,800		9,800				9,300
Senior notes \| Level 2
Debt
Debt instrument fair value	9,700		$ 9,700				$ 9,900
4.65% senior notes due October 2025
Debt
Debt instrument face value					$ 1,000
Debt instrument, interest rate (as a percent)					4.65%
Public offering price					99.846%
5.25% senior notes due June 2015
Debt
Debt instrument, interest rate (as a percent)							5.25%
Repayments of senior notes		$ 150
3.95% senior notes due September 2015
Debt
Debt instrument, interest rate (as a percent)							3.95%
Repayments of senior notes	$ 400