Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Accounts receivable, allowances	$ 21.3	$ 16.9
Property and equipment, accumulated depreciation	464.1	209.3
Identifiable intangible assets, accumulated amortization	$ 310.6	$ 224.5
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	110,146,754	109,523,493
Common stock, shares outstanding (in shares)	110,146,754	109,523,493
Series A Preferred Stock
Preferred stock, shares issued (in shares)	72,885	72,885
Preferred stock, shares outstanding (in shares)	72,885	72,885