Shareholders' equity (Tables)

12 Months Ended

Dec. 31, 2017

Shareholders equity

Schedule of equity

	Number
	of shares	Amount
Balance as at December 31, 2015	36,227,952	$	455.8
Common shares issued under employee share purchase plan (note 22(a))	66,466		4.1
Common shares issued upon exercise of share-based compensation awards (note 22(b))	83,860		7.0
Balance as at December 31, 2016	36,378,278		466.9
Common shares issued as part of acquisition consideration of DigitalGlobe, net of share issuance costs (note 9)	19,644,240		1,071.1
Common shares issued under employee share purchase plan (note 22(a))	83,453		4.5
Common shares issued upon exercise of share-based compensation awards (note 22(b)&(c))	105,595		7.8
Balance as at December 31, 2017	56,211,566	$	1,550.3

Schedule of dividend declared

	For the year ended
	December 31,
	2017		2016
C$1.48 per common share (2016 - C$1.48)	$	47.4	$	41.0