Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Accounts receivable, allowances	$ 10.3	$ 7.5
Preferred stock, par value	$ 1	$ 1
Preferred stock, authorized	5,000,000	5,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.25	$ 0.25
Common stock, authorized	600,000,000	600,000,000
Common stock, issued	73,318,689	73,697,371
Common stock, outstanding	73,318,689	73,697,371