Long-Term Debt And Borrowing Arrangements (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Other Long-term Debt	$ 54	$ 46
Deferred Finance Costs, Net	(57)	(55)
Long-term Debt	$ 3,838	3,461
Uncommitted Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period	0.06%
Uncommitted Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period	3.91%
Six And Three Over Eight Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	April 2024
Long-term Debt, Gross	$ 350	0
Six And Three Over Eight Senior Notes [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350
Floating Rate Term Loan Due March Two Thousand Nineteen [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	March 2019
Long-term Debt, Gross	$ 968	970
Debt Instrument, Description of Variable Rate Basis	225 basis points
Floating Rate Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	275 basis points
Five and One over Eight Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	June 2022
Long-term Debt, Gross	$ 400	400
Five And One Over Two Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	April 2023
Long-term Debt, Gross	$ 674	674
Four And Seven Over Eight Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description	November 2017
Long-term Debt, Gross	$ 300	$ 300
Four And Seven Over Eight Senior Notes [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 300

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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-Section 03
-Paragraph 16
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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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-Name Accounting Standards Codification
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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

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- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
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- Definition

The effective interest rate during the reporting period.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03.16)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
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- Definition

Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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