Consolidated Balance Sheets Parenthetical (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5.7	$ 5.4
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	100.0	100.0
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common shares, shares authorized	1,000.0	1,000.0
Common shares, shares issued	172.1	172.0
Common shares, shares outstanding	172.0	172.0