Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize the bases used to measure financial assets and liabilities that are carried at fair value on a recurring basis in the Condensed Consolidated Balance Sheets:

			Basis of Fair Value Measurement
	Balance as of September 30, 2017		Significant Other Observable Inputs (Level 2)
Assets
Foreign currency contracts	$	1.5	$	1.5
Total assets	$	1.5	$	1.5
Liabilities
Foreign currency contracts		1.0		1.0
Total liabilities	$	1.0	$	1.0

			Basis of Fair Value Measurement
	Balance as of December 31, 2016		Significant Other Observable Inputs (Level 2)
Assets
Foreign currency contracts	$	1.7	$	1.7
Available-for-sale securities	328.7		328.7
Total assets	$	330.4	$	330.4
Liabilities
Foreign currency contracts	1.5		1.5
Total liabilities	$	1.5	$	1.5