Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 275.7	$ 213.5
Accounts receivable, net of allowance for doubtful accounts and customer credits of $5.3 as of December 31, 2014 and $6.5 as of March 31, 2015	154.0	156.5
Deferred income taxes	8.0	9.3
Prepaid expenses	32.3	33.6
Other current assets	9.1	8.8
Total current assets	479.1	421.7
Property and equipment, net	1,068.8	1,057.7
Goodwill	81.1	81.1
Intangible assets, net	14.6	16.6
Other non-current assets	48.7	47.2
Total assets	1,692.3	1,624.3
Current liabilities:
Accounts payable and accrued expenses	135.1	137.3
Accrued compensation and benefits	68.8	66.7
Income and other taxes payable	10.9	11.8
Deferred revenue	24.6	20.9
Capital lease obligations	9.9	15.0
Debt	0.1	25.1
Total current liabilities	249.4	276.8
Non-current liabilities:
Deferred revenue	1.5	1.4
Capital lease obligations	0.8	1.5
Finance lease obligations for build-to-suit leases	146.6	117.4
Deferred income taxes	60.8	71.2
Deferred rent	50.0	49.9
Other liabilities	30.3	32.3
Total liabilities	539.4	550.5
COMMITMENTS AND CONTINGENCIES
Stockholders' equity:
Common stock, $0.001 par value per share: 300,000,000 shares authorized; 140,945,171 shares issued and outstanding as of December 31, 2014; 142,694,732 shares issued and outstanding as of March 31, 2015	0.1	0.1
Additional paid-in capital	757.9	696.0
Accumulated other comprehensive loss	(31.9)	(20.7)
Retained earnings	426.8	398.4
Total stockholders’ equity	1,152.9	1,073.8
Total liabilities and stockholders' equity	$ 1,692.3	$ 1,624.3