Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
Goodwill activity:
Balance at beginning of year	$ 1,983.3
Goodwill, Purchase Accounting Adjustments	(0.6)
Goodwill, Impairment Loss	(15.7)
Foreign currency translation	(23.5)
Balance at end of year	1,943.5
Canada [Member]
Goodwill activity:
Balance at beginning of year	551.4
Business acquisition and disposition	0.0
Goodwill, Impairment Loss	0.0
Foreign currency translation	39.0
Balance at end of year	590.4
Europe [Member]
Goodwill activity:
Balance at beginning of year	1,408.7
Goodwill, Written off Related to Sale of Business Unit	0.0
Goodwill, Impairment Loss	0.0
Foreign currency translation	(62.1)
Balance at end of year	1,346.6
MCI [Member]
Goodwill activity:
Balance at beginning of year	23.2
Goodwill, Purchase Accounting Adjustments	(0.6)
Goodwill, Impairment Loss	(15.7)
Foreign currency translation	(0.4)
Balance at end of year	$ 6.5