Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Amount of gain or loss related to open and terminated interest rate derivatives that were designated for hedge accounting.

+ References

No definition available.

+ Details

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- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Details

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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- Definition

The net cash outflow or inflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 27

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3581-108585

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Derivatives and Risk Management Activities (Details 2) (USD $) In Millions, unless otherwise specified				1 Months Ended
	Jun. 30, 2014	Jun. 30, 2014 10 forward starting interest rate swaps (30-year) Cash flow hedge contract	Apr. 23, 2014 Treasury locks entered into in anticipation of issuance of 4.70% senior notes due 2044	Apr. 30, 2014 Treasury locks entered into in anticipation of issuance of 4.70% senior notes due 2044 Cash flow hedge	Apr. 23, 2014 Treasury locks entered into in anticipation of issuance of 4.70% senior notes due 2044 Cash flow hedge contract
Interest Rate Risk Hedging
Net deferred gains (losses) from interest rate risk hedging included in AOCI	$ (101)
Number of outstanding interest rate swaps (in contracts)		10			5
Rate of fixed interest to be received on interest rate swap (as a percent)		3.60%			3.64%
Notional amount of derivatives		250	250		250
Cash payment for (proceeds from) termination of interest rate swaps				$ 7