Other Assets (Tables)

12 Months Ended

Dec. 31, 2017

Other Assets [Abstract]

Schedule of Other Assets

Included in other assets are the following:

	2017		2016
	(In millions of dollars)
Life insurance cash surrender value (see Retirement Benefits footnote)	$	188.7	$	165.0
Available-for-sale investment (see Fair Value Measurements footnote)	228.1		141.2
Wage subsidy receivable	28.1		22.3
Workers' compensation receivable	10.5		6.8
Intangibles, net of accumulated amortization of $18.6 million in 2017 and $16.7 million in 2016	18.2		0.6
Other	26.3		13.5
Other assets	$	499.9	$	349.4