Consolidated Statements of Comprehensive Income - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Statement of Comprehensive Income [Abstract] | |||
| Net income | $ 236.5 | $ 269.0 | $ 249.8 |
| Other comprehensive income, net of taxes: | |||
| Foreign currency translation adjustments | 1.0 | 2.7 | 0.1 |
| Comprehensive income | 237.5 | 271.7 | 249.9 |
| Comprehensive loss (income) attributable to noncontrolling interests | (0.6) | 1.6 | (2.4) |
| Comprehensive income attributable to stockholders | $ 236.9 | $ 273.3 | $ 247.5 |
| X | ||||||||||
- Definition Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment from Continuing Operations, Net of Tax No definition available.
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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