PROPERTY AND EQUIPMENT, NET (Tables)

12 Months Ended

Dec. 31, 2015

Property and Equipment, Net

		December 31,
		2015		2014
Office and computer equipment (3 - 10 year estimated useful life)		$	172.1	$	152.5
Office furniture and fixtures (3 - 10 year estimated useful life)			45.4		43.8
Internal-use computer software (1 - 10 year estimated useful life)			387.0		336.8
Leasehold improvements and building (3 - 20 year estimated useful life)			220.8		220.7
	Total property and equipment, at cost		825.3		753.8
Less: accumulated depreciation and amortization			(518.9)		(451.5)
Total property and equipment, net		$	306.4	$	302.3