Income Taxes Valuation Allowance (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($) Rate
Valuation Allowance [Line Items]
Change in Foreign Tax Rate Enacted in Period | Rate	2.00%
UNITED STATES
Valuation Allowance [Line Items]
Tax Valuation Allowance Expense, Federal	$ 455.3
CANADA
Valuation Allowance [Line Items]
Tax Valuation Allowance Expense, Federal	$ 96.1