Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Accounts receivable, allowances	$ 20.3	$ 16.9
Property and equipment, accumulated depreciation	349.9	209.3
Identifiable intangible assets, accumulated amortization	$ 268.4	$ 224.5
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	109,736,757	109,523,493
Common stock, shares outstanding	109,736,757	109,523,493
Series A Preferred Stock
Preferred stock, shares issued	72,885	72,885
Preferred stock, shares outstanding	72,885	72,885