Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 3,429.6	$ 2,964.5
Marketable securities	39.7	34.9
Trade accounts receivable, net	1,473.0	1,409.3
Inventories	803.9	775.7
Prepaid expenses and other current assets	706.4	648.6
Total current assets	6,452.6	5,833.0
Property, plant and equipment, net	1,244.8	1,238.8
Intangible assets, net	3,048.3	3,002.4
Goodwill	5,100.1	5,100.1
Right of use operating assets	216.8	223.1
Deferred tax assets	2,140.6	2,199.4
Other assets	447.0	506.2
Total assets	18,650.2	18,103.0
Liabilities and Stockholders' Equity
Accounts payable	125.3	118.6
Accrued expenses	910.7	1,084.7
Current portion of long-term debt	143.2	142.4
Current portion of contingent consideration	120.0	114.9
Other current liabilities	127.0	164.1
Total current liabilities	1,426.2	1,624.7
Long-term debt, less current portion	2,388.8	2,419.6
Contingent consideration	303.5	299.4
Deferred tax liabilities	1,639.1	1,632.2
Noncurrent operating lease liabilities	170.8	177.1
Other liabilities	290.8	298.8
Total liabilities	6,219.2	6,451.8
Commitments and contingencies (Note 17)
Stockholders' Equity:
Common stock, $0.0001 par value; 290.0 shares authorized; 242.3 and 240.9 shares issued at March 31, 2021 and December 31, 2020, respectively	0.0	0.0
Additional paid-in capital	9,243.3	9,152.9
Treasury stock, at cost, 21.4 shares at March 31, 2021 and December 31, 2020	(2,620.5)	(2,620.3)
Accumulated other comprehensive loss	(85.2)	(124.6)
Retained earnings	5,879.2	5,243.2
Total Alexion stockholders' equity	12,416.8	11,651.2
Noncontrolling interest	14.2	0.0
Total stockholders' equity	12,431.0	11,651.2
Total liabilities and stockholders' equity	$ 18,650.2	$ 18,103.0