v2.4.0.6

Fair Value of Financial Assets and Liabilities - Summary of Estimated Fair Value and Carrying Amount of Financial Instruments Measured on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Liabilities: |  |  |  |  |
Short-term debt | $ (307) |  | $ (52) |  |
Long-term debt | (3,185) |  | (3,747) |  | (4,128)
Carrying Amount [Member] | Level II [Member] |  |  |  |  |
Assets: |  |  |  |  |
Other financial assets | 18 |  | 17 |  |
Derivative instruments-assets | 1 |  | 2 |  |
Liabilities: |  |  |  |  |
Short-term debt | (42) |  | (52) |  |
Long-term debt | (608) | [1] | (606) | [1] |
Other long-term debt | (245) |  | (19) |  |
Derivative instruments-liabilities | (2) |  | (3) |  |
Carrying Amount [Member] | Level I [Member] |  |  |  |  |
Liabilities: |  |  |  |  |
Short-term debt | (265) |  |  |  |
Long-term debt | (2,332) |  | (3,122) |  |
Estimated Fair Value [Member] | Level II [Member] |  |  |  |  |
Assets: |  |  |  |  |
Other financial assets | 18 |  | 17 |  |
Derivative instruments-assets | 1 |  | 2 |  |
Liabilities: |  |  |  |  |
Short-term debt | (42) |  | (52) |  |
Long-term debt | (635) | [1] | (609) | [1] |
Other long-term debt | (245) |  | (19) |  |
Derivative instruments-liabilities | (2) |  | (3) |  |
Estimated Fair Value [Member] | Level I [Member] |  |  |  |  |
Liabilities: |  |  |  |  |
Short-term debt | (267) |  |  |  |
Long-term debt | $ (2,453) |  | $ (3,296) |  |
[1] | Represent bonds which are privately held (floating rate secured notes 2016).

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- Definition Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer). + 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 210.5-02.19,20) -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 19 -Article 5 + Details
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- Definition Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FIN39-1 -Paragraph 10A, 10B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
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- Definition Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date. + 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) -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 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section H + Details
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