CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 4,445.5	$ 4,880.3
Marketable securities available for sale	1,261.8	1,671.6
Accounts receivable, net of allowances of $31.3 and $30.3 at March 31, 2016 and December 31, 2015, respectively	1,420.3	1,420.9
Inventory	470.6	443.4
Other current assets	787.8	984.7
Total current assets	8,386.0	9,400.9
Property, plant and equipment, net	840.0	814.1
Intangible assets, net	10,763.5	10,858.1
Goodwill	4,876.5	4,879.0
Other assets	1,097.9	1,012.3
Total assets	25,963.9	26,964.4
Current liabilities:
Accounts payable	219.7	240.8
Accrued expenses and other current liabilities	1,541.8	1,647.7
Income taxes payable	14.6	19.8
Current portion of deferred revenue	57.8	60.6
Total current liabilities	1,833.9	1,968.9
Deferred revenue, net of current portion	28.8	30.0
Income taxes payable	326.9	324.2
Other non-current tax liabilities	2,519.2	2,519.2
Other non-current liabilities	1,912.0	2,041.7
Long-term debt, net of discount	14,268.3	14,161.4
Total liabilities	$ 20,889.1	$ 21,045.4
Commitments and Contingencies (Note 15)
Stockholders’ Equity:
Preferred stock, $.01 par value per share, 5.0 million shares authorized; none outstanding at March 31, 2016 and December 31, 2015, respectively	$ 0.0	$ 0.0
Common stock, $.01 par value per share, 1,150.0 million shares authorized; issued 941.9 million and 940.1 million shares at March 31, 2016 and December 31, 2015, respectively	9.4	9.4
Common stock in treasury, at cost; 167.2 million and 153.5 million shares at March 31, 2016 and December 31, 2015, respectively	(15,431.5)	(14,051.8)
Additional paid-in capital	11,370.3	11,119.3
Retained earnings	8,875.1	8,074.4
Accumulated other comprehensive income	251.5	767.7
Total stockholders’ equity	5,074.8	5,919.0
Total liabilities and stockholders’ equity	$ 25,963.9	$ 26,964.4