Intangible assets and goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Intangible assets and goodwill

Schedule of finite lived intangible assets

					Technologies,
					including				Trademarks
	Customer				development				and
	relationships		Backlog		in-process		Software		trade names		Other(1)		Total
Cost
Balance as at December 31, 2015	$	13.9	$	—	$	251.2	$	110.1	$	67.4	$	9.0	$	451.6
Purchase of intangible assets		—		—		—		12.3		—		—		12.3
Development of intangible assets		—		—		49.2		—		—		—		49.2
Disposals		—		—		(1.2)		(0.5)		—		—		(1.7)
Foreign currency translation		—		—		—		0.4		—		0.2		0.6
Balance as at December 31, 2016		13.9		—		299.2		122.3		67.4		9.2		512.0
Acquired from business combination  (note 9)		608.2		331.0		317.8		46.0		36.8		100.0		1,439.8
Purchase of intangible assets		—		—		—		30.7		—		—		30.7
Development of intangible assets		—		—		56.0		—		—		—		56.0
Disposals		—		—		—		(0.2)		—		—		(0.2)
Foreign currency translation		0.1		—		—		2.5		—		0.5		3.1
Balance as at December 31, 2017	$	622.2	$	331.0	$	673.0	$	201.3	$	104.2	$	109.7	$	2,041.4
Accumulated amortization
Balance as at December 31, 2015	$	3.7	$	—	$	61.3	$	55.8	$	10.7	$	6.7	$	138.2
Amortization Expense		1.1		—		24.0		14.3		3.4		0.7		43.5
Disposals		—		—		(1.3)		(0.5)		—		—		(1.8)
Foreign currency translation		—		—		—		0.4		—		0.1		0.5
Balance as at December 31, 2016		4.8		—		84.0		70.0		14.1		7.5		180.4
Amortization expense		11.5		23.3		39.1		17.0		4.3		10.8		106.0
Disposals		—		—		—		(0.2)		—		—		(0.2)
Foreign currency translation		0.1		—		—		1.3		—		0.4		1.8
Balance as at December 31, 2017	$	16.4	$	23.3	$	123.1	$	88.1	$	18.4	$	18.7	$	288.0
Net book value
December 31, 2017	$	605.8	$	307.7	$	549.9	$	113.2	$	85.8	$	91.0	$	1,753.4
December 31, 2016	$	9.1	$	—	$	215.2	$	52.3	$	53.3	$	1.7	$	331.6

(1) Other intangible assets is comprised of the following finite life intangible assets: licenses, image library and non-compete agreements.

Schedule of reconciliation of changes in goodwill

		Space
		Systems	Imagery		Services		Total
Balance as at December 31, 2015	$	622.8	$	26.8	$	47.4	$	697.0
Foreign currency translation		2.3		0.2		—		2.5
Balance as at December 31, 2016		625.1		27.0		47.4		699.5
Goodwill on acquisition of DigitalGlobe (note 9)		142.9		1,399.8		126.2		1,668.9
Foreign currency translation		5.6		0.4		—		6.0
Balance as at December 31, 2017	$	773.6	$	1,427.2	$	173.6	$	2,374.4

Schedule of key assumptions used in performing the impairment test

				Perpetual
Segment	Valuation method	Discount rate		growth rate
Space Systems	Value in use	7.5	%	2.0	%
Imagery	Value in use	10.3	%	2.0	%
Services	Value in use	10.3	%	3.0	%