Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Nonrecurring (Tables)

12 Months Ended

Dec. 31, 2017

Assets and Liabilities Measured at Fair Value on Recurring Basis [Abstract]

Fair Value Measurements, Nonrecurring [Table Text Block]

The following table presents information about our financial instruments that are not measured at fair value on a recurring basis as of December 31, 2017, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Total long-term debt	$	0.0	$	1,296.4	$	46.2	$	1,342.6