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Income Tax (Narrative) (Details) (USD $) | 12 Months Ended |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2009 | Dec. 31, 2008 | Dec. 31, 2007 | Dec. 31, 2010
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |
Tax Adjustments Provision For Active Financing Exception | $ 1,000,000 |  |  |  |  |  |
Cumulative Tax Benefit Adjustment |  |  | 30,700,000 |  |  |  |
Unrecorded Tax Benefit Adjustment Impact By Year |  |  | 12,000,000 | 9,000,000 | 6,000,000 | 3,000,000 |
Deferred Tax Assets, Valuation Allowance | 102,228,000 | 10,100,000 |  |  |  |  |
Valuation Allowance Without Benefit Upon Release | 25,900,000 |  |  |  |  |  |
Tax Adjustments Settlements And Unusual Provisions | 4,200,000 |  |  |  |  |  |
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability | 1,154,400,000 | 663,900,000 |  |  |  |  |
Proceeds from Income Tax Refunds | 2,600,000 | 16,200,000 | 11,100,000 |  |  |  |
Cash paid for income taxes | 113,400,000 | 113,200,000 | 140,100,000 |  |  |  |
Operating Loss Carryforwards | 916,400,000 | 555,400,000 |  |  |  |  |
Operating Loss Carryforwards With Expiration Dates | 419,200,000 |  |  |  |  |  |
Unrecognized Tax Benefits | 279,801,000 | 245,636,000 | 194,260,000 |  |  |  | 182,354,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 40,000,000 |  |  |  |  |  |
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 7,600,000 | 9,900,000 | 7,100,000 |  |  |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 57,300,000 | $ 49,600,000 |  |  |  |  |

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- Definition The cumulative tax benefit adjustment related to a decrease in the Canadian federal rate. No restatement was deemed necessary due to materiality of the adjustment on any particular accounting period. + References No definition available. + Details
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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws that have a definitive expiration date. Excludes operating loss carryforwards which do not expire in a future period. + References No definition available. + Details
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- Definition The American Taxpayer Relief Act of 2012 was signed into law on January 2, 2013. The Act retroactively restored several expired business tax provisions, including the active financing exception. Because a change in tax law is accounted for in the period of enactment, a provision was made for the retroactive effect of the Act on the Companys U.S. federal taxes for 2012. + References No definition available. + Details
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- Definition The impact of the Cumulative Tax Benefit Adjustment on a particular period. This does not represent a restatement of prior periods but rather the amount of the cumulative adjustment that would have been recorded in the periods affected, even though not material, had it been properly recorded. + References No definition available. + Details
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- Definition Amount of valuation allowance if released will not benefit operations due to taxation in multiple jurisdictions. Any dual tax is reduced through foreign tax credit as only one incidence of tax will ever be paid. paid. + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition The amount of cash received during the period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28446-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28511-109314 + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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