CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 5,063.7	$ 4,880.3
Marketable securities available for sale	1,340.0	1,671.6
Accounts receivable, net of allowances of $31.3 and $30.3 at June 30, 2016 and December 31, 2015, respectively	1,514.9	1,420.9
Inventory	490.4	443.4
Other current assets	760.0	984.7
Total current assets	9,169.0	9,400.9
Property, plant and equipment, net	854.0	814.1
Intangible assets, net	10,587.1	10,858.1
Goodwill	4,876.5	4,879.0
Other assets	1,075.4	1,012.3
Total assets	26,562.0	26,964.4
Current liabilities:
Accounts payable	229.8	240.8
Accrued expenses and other current liabilities	1,695.7	1,647.7
Income taxes payable	12.5	19.8
Current portion of deferred revenue	49.0	60.6
Total current liabilities	1,987.0	1,968.9
Deferred revenue, net of current portion	27.9	30.0
Income taxes payable	346.0	324.2
Other non-current tax liabilities	2,519.2	2,519.2
Other non-current liabilities	1,821.0	2,041.7
Long-term debt, net of discount	14,312.1	14,161.4
Total liabilities	21,013.2	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 June 30, 2016 and December 31, 2015, respectively	0.0	0.0
Common stock, $.01 par value per share, 1,150.0 million shares authorized; issued 946.4 million and 940.1 million shares at June 30, 2016 and December 31, 2015, respectively	9.5	9.4
Common stock in treasury, at cost; 171.4 million and 153.5 million shares at June 30, 2016 and December 31, 2015, respectively	(15,851.1)	(14,051.8)
Additional paid-in capital	11,666.1	11,119.3
Retained earnings	9,473.3	8,074.4
Accumulated other comprehensive income	251.0	767.7
Total stockholders’ equity	5,548.8	5,919.0
Total liabilities and stockholders’ equity	$ 26,562.0	$ 26,964.4

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.