Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Property, Plant and Equipment

The following table shows estimated useful lives of property, plant and equipment:

Property, plant and equipment	Useful Life
Buildings	40 to 50 years
Leasehold improvements	Lesser of lease term or the life of the asset
Machinery, equipment and furniture	3 to 10 years
Computer software	5 to 10 years

The components of net property, plant and equipment were as follows:

	December 31,
(in millions of dollars)	2015			2014
Land and improvements	$	17.6		$	21.5
Buildings and improvements to leaseholds	120.0			129.0
Machinery and equipment	358.5			374.2
Construction in progress	30.0			23.0
	526.1			547.7
Less: accumulated depreciation	(317.0		)	(312.2		)
Property, plant and equipment, net(1)	$	209.1		$	235.5