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Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Current: |  |  |  |
Federal |  | $ 189.7 | $ 146.9 | $ 125.3
State |  | 28.9 | 25.1 | 21.3
Federal and state deferred |  | 13.4 | 27.1 | 31.3
Change in valuation allowance, net |  | (3.7) | 0.1 | (0.2)
Adjustments and settlements |  | 0.3 | 0.3 | (0.6)
Income tax provision |  | 228.6 | 199.5 | 177.1
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] |  |  |  |
Income tax provision at statutory rate |  | 211.6 | 180.9 | 161.4
Non-deductible expenses (income), net |  | (0.6) | (0.2) | 1.1
State income taxes, net of federal benefit |  | 21.7 | 18.8 | 16.7
Income tax provision, excluding other reconciling items |  | 232.7 | 199.5 | 179.2
Change in valuation allowance, net |  | (3.7) | 0.1 | (0.2)
Adjustments and settlements |  | 0.3 | 0.3 | (0.6)
Other, net |  | (0.7) | (0.4) | (1.3)
Income tax provision |  | 228.6 | 199.5 | 177.1
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] |  |  |  |
Income tax provision at statutory rate, % |  | 35.00% | 35.00% | 35.00%
Non-deductible expenses (income), net, % |  | (0.10%) | 0.00% | 0.20%
State income taxes, net of federal benefit, % |  | 3.60% | 3.60% | 3.60%
Income tax provision, excluding other reconciling items, % |  | 38.50% | 38.60% | 38.80%
Change in valuation allowance, net, % |  | (0.60%) | 0.00% | 0.00%
Adjustments and settlements, % |  | 0.00% | 0.00% | (0.20%)
Other, net, % |  | (0.10%) | 0.00% | (0.20%)
Income tax provision, % |  | 37.80% | 38.60% | 38.40%
Deferred income tax assets: |  |  |  |
Inventory | 24.6 | 24.6 | 20.3 |
Receivable reserves | 3.0 | 3.0 | 4.0 |
Warranty, chargeback and self - insurance liabilities | 49.2 | 49.2 | 42.8 |
Other accrued liabilities | 21.6 | 21.6 | 18.7 |
Deferred compensation | 19.7 | 19.7 | 12.9 |
Stock-based compensation | 24.1 | 24.1 | 20.6 |
Loss carryforwards—federal and state | 10.5 | 10.5 | 13.8 |
Other, net | 12.7 | 12.7 | 15.4 |
Total deferred income tax assets | 165.4 | 165.4 | 148.5 |
Valuation allowance | (2.7) | (2.7) | (6.5) |
Deferred income tax assets, net of valuation allowance | 162.7 | 162.7 | 142.0 |
Deferred income tax liabilities: |  |  |  |
Long-lived assets (intangibles assets and property) | (200.2) | (200.2) | (170.1) |
Other, net | (21.3) | (21.3) | (16.6) |
Total deferred income tax liabilities | (221.5) | (221.5) | (186.7) |
Net deferred income tax assets (liabilities) | (58.8) | (58.8) | (44.7) |
Deferred Tax Assets, Net, Classification [Abstract] |  |  |  |
Deferred tax assets, net, current | 57.7 | 57.7 | 44.7 |
Deferred tax liabilities, net, noncurrent | 116.5 | 116.5 | 89.4 |
Income taxes payable included in other current liabilities | 8.4 | 8.4 | 3.2 |
Deferred Tax Assets, Operating Loss Carryforwards, Components [Abstract] |  |  |  |
Gross domestic state net operating and capital loss carryforwards | 173.5 | 173.5 |  |
State tax credits | 4.5 | 4.5 |  |
Deferred tax asset, loss carryforwards and tax credits | 10.5 | 10.5 |  |
Valuation allowance related to loss carryforwards | 2.7 | 2.7 | 6.5 |
Valuation allowance, deferred tax asset, change in amount | 3.4 | 3.4 |  |
Recognized net tax benefits related to adjustments and resolution of certain income tax matters |  |  |  | $ 1.3

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- Definition The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to state and local income tax expense or benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1 -Article 4 + Details
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- Definition Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10A, 10B, 10C -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10 -Subparagraph b -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 amount of the tax credit 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph a -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 amount of the change in the period in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 26 -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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