CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 4,880.3	$ 4,121.6
Marketable securities available-for-sale	1,671.6	3,425.1
Accounts receivable, net of allowances of $30.3 and $32.1 at December 31, 2015 and 2014, respectively	1,420.9	1,166.7
Inventory	443.4	393.1
Other current assets	984.7	606.1
Total current assets	9,400.9	9,712.6
Property, plant and equipment, net	814.1	642.6
Intangible assets, net	10,858.1	4,067.6
Goodwill	4,879.0	2,191.2
Other assets	1,101.3	726.1
Total assets	27,053.4	17,340.1
Current liabilities:
Short-term borrowings and current portion of long-term debt	0.0	605.9
Accounts payable	240.8	198.2
Accrued expenses	1,376.7	991.1
Income taxes payable	19.8	12.7
Current portion of deferred revenue	60.6	28.5
Other current liabilities	271.0	275.8
Total current liabilities	1,968.9	2,112.2
Deferred revenue, net of current portion	30.0	27.8
Income taxes payable	324.2	272.9
Other non-current tax liabilities	2,519.2	0.0
Other non-current liabilities	2,041.7	2,136.7
Long-term debt, net of discount	14,250.4	6,265.7
Total liabilities	$ 21,134.4	$ 10,815.3
Commitments and Contingencies (Note 18)
Stockholders' Equity:
Preferred stock, $.01 par value per share, 5.0 million shares authorized; none outstanding at December 31, 2015 and 2014, respectively	$ 0.0	$ 0.0
Common stock, $.01 par value per share, 1,150.0 million shares authorized; issued 940.1 million and 924.8 million shares at December 31, 2015 and 2014, respectively	9.4	9.2
Common stock in treasury, at cost; 153.5 million and 124.6 million shares at December 31, 2015 and 2014, respectively	(14,051.8)	(10,698.8)
Additional paid-in capital	11,119.3	9,827.2
Retained earnings	8,074.4	6,472.4
Accumulated other comprehensive income	767.7	914.8
Total stockholders' equity	5,919.0	6,524.8
Total liabilities and stockholders' equity	$ 27,053.4	$ 17,340.1