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Shareholders' Equity - Additional Information (Detail) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  |  |  | 12 Months Ended |  |  |  |  |  | 12 Months Ended
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Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2008 USD ($) | Dec. 31, 2002 | Dec. 31, 2012 EUR (€) | Dec. 31, 2011 EUR (€) | Jan. 22, 2008 | Dec. 31, 2002 Advisor To Supervisory Board [Member] | Dec. 31, 2001 Advisor To Supervisory Board [Member] | Dec. 31, 2000 Advisor To Supervisory Board [Member] | Dec. 31, 1999 Advisor To Supervisory Board [Member] | Dec. 31, 2002 Supervisory Board Option Plan [Member] | Dec. 31, 2001 Supervisory Board Option Plan [Member] | Dec. 31, 2000 Supervisory Board Option Plan [Member] | Dec. 31, 1999 Supervisory Board Option Plan [Member] | Dec. 31, 2001 Employee Stock Option Plan, 2001 [Member] | Dec. 31, 2012 Supervisory Board Two Thousand Twelve [Member] EUR (€) | Dec. 31, 2012 Employee Plan 2009 [Member] | Dec. 31, 2009 Employee Plan 2009 [Member] USD ($) | May 20, 2012 Employee Plan 2009 [Member] Subsequent Event [Member] | May 20, 2011 Employee Plan 2009 [Member] Subsequent Event [Member] | May 20, 2010 Employee Plan 2009 [Member] Subsequent Event [Member] | May 20, 2012 Employee Plan 2009 [Member] Subsequent Event [Member] FRANCE | May 20, 2011 Employee Plan 2009 [Member] Subsequent Event [Member] FRANCE | Dec. 31, 2012 Employee Plan 2010 [Member] | Dec. 31, 2010 Employee Plan 2010 [Member] USD ($) | Dec. 31, 2012 Employee Plan 2011 [Member] | Dec. 31, 2011 Employee Plan 2011 [Member] USD ($) | Dec. 31, 2012 Employee Plan 2012 [Member] USD ($) | Dec. 31, 2012 Retained Earnings [Member] USD ($) | Dec. 31, 2011 Retained Earnings [Member] USD ($) | Dec. 31, 2010 Retained Earnings [Member] USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Authorized share capital |  |  |  |  |  | € 1,810 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized | 1,200,000,000 | 1,200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference stock, shares authorized | 540,000,000 | 540,000,000 |  |  |  |  |  | 540,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, nominal value |  |  |  |  |  | € 1.04 | € 1.04 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued | 910,559,805 | 910,559,805 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock Shares outstanding | 887,953,202 | 884,995,094 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued as a percentage of Par value of the preference shares to be issued |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference shares outstanding Maximum Period |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common shares Authorized to repurchase |  |  |  | 30 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of shares |  |  |  | 29,520,220 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company owned treasury shares | 22,606,603 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transfer of treasury shares to employees under the Company's share based remuneration programs | 20,313,617 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transfer of treasury shares to employees under the Company's share based remuneration during the year | 2,958,108 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award,Options,Grants in Period |  |  |  |  |  |  |  |  | 6,000 | 4,500 | 4,500 | 9,000 | 12,000 | 9,000 | 9,000 | 18,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period of option |  |  |  |  | 30 days |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Option expiration in years after grant date |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  | 8 years |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum Period authorized to be Granted | 6,700,765 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000,000 | 180,000 |  |  |  |  |  |  |  |  |  |  |  | 6,520,765 |  |  |
Weighted Average Remaining contractual life options | 9 months 18 days | 1 year 2 months 12 days | 1 year 10 months 24 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards are granted at the nominal value of the share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1.04 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sub plan for employees of Company's European subsidiaries for statutory payroll tax purposes nonvested shares vested over requisite service period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36.00% | 32.00% | 32.00% | 36.00% | 64.00% |  |  |  |  |  |  |  |
Vesting schedule for Supervisory Board |  |  | One third of the total number of awards granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value of nonvested shares granted to employees under Employee Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7.54 |  |  |  |  |  |  | $ 8.74 |  | $ 9.08 | $ 4.87 |  |  |
Number of shares to vest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Two thirds of the awards granted will fully vest |  |  |  |  |  |  | Two thirds of the awards granted will fully vest |  | None of the three performance conditions were met | Two thirds of the awards granted will fully vest |  |  |
Compensation cost, excluding payroll tax and social contribution, capitalized as part of inventory | 1 | 2 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total unrecognized compensation cost related to the grant of nonvested shares | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition | 10 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income tax expense relating to unvested share based compensation expense | 2 | 7 | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) reclassified from OCI into earnings | 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends, per share | $ 0.40 | $ 0.40 | $ 0.28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends | 355 | 354 | 247 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 355 | 354 | 247
Dividend paid | 266 | 266 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend paid per common share per quarter | $ 0.10 | $ 0.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable to stockholders at the end of the period | $ 89 | $ 88 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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