Other Income (Expense), Net (Tables)

6 Months Ended

Jun. 30, 2015

Other Income and Expenses [Abstract]

Other Income (Expense), Net

Other income, net consisted of the following, for each period presented (in millions of dollars):

	Quarter Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Interest income	$	—	$	0.2	$	0.2	$	0.5
Unrealized gains on financial derivatives1	—		0.5		—		1.4
Realized gains on investments	0.2		0.2		0.5		0.4
All other, net	0.2		0.9		0.1		1.4
Other income, net	$	0.4	$	1.8	$	0.8	$	3.7

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¹  See "Hedges Relating to the Convertible Notes" in Note 8 for discussion of such instruments.