Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 2,326.5	$ 1,308.0
Marketable securities	2,568.6	2,120.5
Accounts receivable, net	1,441.6	1,227.0
Due from anti-CD20 therapeutic programs, net	300.6	314.5
Inventory	1,001.6	893.4
Other current assets	1,093.3	836.9
Total current assets	8,732.2	6,700.3
Marketable securities	2,829.4	2,760.4
Property, plant and equipment, net	2,501.8	2,187.6
Intangible assets, net	3,808.3	4,085.1
Goodwill	3,669.3	2,663.8
Investments and other assets	1,335.8	1,107.6
Total assets	22,876.8	19,504.8
Current liabilities:
Current portion of notes payable and other financing arrangements	4.7	4.8
Taxes payable	231.9	208.7
Accounts payable	279.8	267.4
Accrued expenses and other	2,903.5	2,096.8
Total current liabilities	3,419.9	2,577.7
Notes payable and other financing arrangements	6,512.7	6,521.5
Deferred tax liability	93.1	124.9
Other long-term liabilities	722.5	905.8
Total liabilities	10,748.2	10,129.9
Commitments and contingencies
Biogen Idec Inc. shareholders' equity
Preferred stock, par value $0.001 per share	0.0	0.0
Common stock, par value $0.0005 per share	0.1	0.1
Additional paid-in capital	0.0	0.0
Accumulated other comprehensive loss	(319.9)	(224.0)
Retained earnings	15,071.6	12,208.4
Treasury stock, at cost; 22.6 million shares, respectively	(2,611.7)	(2,611.7)
Total Biogen Inc. shareholders’ equity	12,140.1	9,372.8
Noncontrolling interests	(11.5)	2.1
Total equity	12,128.6	9,374.9
Total liabilities and equity	$ 22,876.8	$ 19,504.8