CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 3,432.4	$ 2,193.7
Marketable securities	2,355.2	1,393.3
Accounts receivable, net	5,452.0	4,114.7
Inventories	2,053.8	1,916.6
Prepaid expenses and other current assets	482.0	160.8
Total current assets	13,775.4	9,779.1
Marketable securities	5,631.3	3,135.6
Property, plant, and equipment, net	3,395.7	3,221.6
Deferred tax assets	723.2	858.9
Other noncurrent assets	145.9	168.1
Total assets	23,671.5	17,163.3
Current liabilities:
Accounts payable	427.0	475.5
Accrued expenses and other current liabilities	2,061.0	1,644.2
Finance lease liabilities	719.0	0.0
Deferred revenue	507.8	577.7
Total current liabilities	3,714.8	2,697.4
Long-term debt	1,979.6	1,978.5
Finance lease liabilities	0.0	717.2
Deferred revenue	56.5	57.8
Other noncurrent liabilities	662.6	687.1
Total liabilities	6,413.5	6,138.0
Stockholders' equity:
Preferred Stock, $.01 par value; 30,000,000 shares authorized; issued and outstanding - none	0.0	0.0
Additional paid-in capital	7,919.3	6,716.2
Retained earnings	16,739.3	10,893.0
Accumulated other comprehensive income	9.5	29.3
Treasury Stock, at cost; 17,930,390 shares in 2021 and 16,431,520 shares in 2020	(7,410.2)	(6,613.3)
Total stockholders' equity	17,258.0	11,025.3
Total liabilities and stockholders' equity	23,671.5	17,163.3
Class A Stock
Stockholders' equity:
Common stock	0.0	0.0
Common Stock
Stockholders' equity:
Common stock	$ 0.1	$ 0.1