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Income Taxes (Schedule Of Other Taxes) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Abstract]      
Payroll Taxes $ 48.0awi_PayrollTaxes $ 46.4awi_PayrollTaxes $ 44.6awi_PayrollTaxes
Property, franchise and capital stock taxes $ 10.9awi_PropertyFranchiseAndCapitalStockTaxes $ 10.2awi_PropertyFranchiseAndCapitalStockTaxes $ 11.1awi_PropertyFranchiseAndCapitalStockTaxes