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Consolidated Statements of Cash Flows Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014
Other Significant Noncash Transactions [Line Items] |
Borrowing in Revolving Debt | $ 100.0
Repayment of Revolving Debt | 140.0
Borrowing in Term Loans | 225.0
Repayment of Term Loans | 187.5
Net Cash Payment in Debt Refinancing | $ 2.5

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- Definition Borrowing in Revolving Debt + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Borrowing in Term Loans + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Net Cash Payment in Debt Refinancing + References No definition available. + Details
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- Definition Repayment of Revolving Debt + References No definition available. + Details
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- Definition Repayment of Term Loans + References No definition available. + Details
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Namespace Prefix: | na_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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