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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtAndCapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

-Paragraph 22

-Article 5

Reference 2: 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

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Debt (Schedule Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	May 31, 2014	Sep. 30, 2013	Sep. 30, 2014
Debt Instrument [Line Items]
Current portion of long-term debt	$ 11us-gaap_LongTermDebtCurrent	$ 334us-gaap_LongTermDebtCurrent
Long-term debt, current and noncurrent	3,387us-gaap_DebtAndCapitalLeaseObligations	2,955us-gaap_DebtAndCapitalLeaseObligations
Long-term debt and capital lease obligations	3,376	2,621
Senior Debt Obligations Due 2033 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	297	297
Interest rate	5.875%
Senior Debt Obligations Due 2014 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	0	323
Interest rate	5.375%		5.375%
Senior Debt Obligations Due 2015 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	0	230
Interest rate	5.75%			5.75%
Senior Debt Obligations Due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	249	249
Interest rate	2.30%
Senior Debt Obligations Due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	0	399
Interest rate	9.25%
Senior Debt Obligations Due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	497	497
Interest rate	4.80%
Senior Debt Obligations Due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	249	248
Interest rate	2.55%			2.55%
Senior Debt Obligations Due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	248	247
Interest rate	4.05%			4.05%
Senior Debt Obligations Due 2024 [Member] [Domain]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	595	0
Interest rate	3.50%		3.50%
2.35% Senior Debt Obligations Due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	300	0
Interest rate	2.35%				2.35%
3.50% Senior Debt Obligations Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	498	0
Interest rate	3.50%				3.50%
Mortgage Due 2035 [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	403	413
Interest rate	5.70%
Three-Year Delayed Draw Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	50	50
Other Debt Instruments [Member]
Debt Instrument [Line Items]
Long-term debt, current and noncurrent	$ 1	$ 2