CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,885.6	$ 2,193.7
Marketable securities	2,809.1	1,393.3
Accounts receivable, net	6,036.5	4,114.7
Inventories	1,951.3	1,916.6
Prepaid expenses and other current assets	332.4	160.8
Total current assets	14,014.9	9,779.1
Marketable securities	6,838.0	3,135.6
Property, plant, and equipment, net	3,482.2	3,221.6
Deferred tax assets	876.9	858.9
Other noncurrent assets	222.8	168.1
Total assets	25,434.8	17,163.3
Current liabilities:
Accounts payable	564.0	475.5
Accrued expenses and other current liabilities	2,206.8	1,644.2
Finance lease liabilities	719.7	0.0
Deferred revenue	442.0	577.7
Total current liabilities	3,932.5	2,697.4
Long-term debt	1,980.0	1,978.5
Finance lease liabilities	0.0	717.2
Deferred revenue	73.3	57.8
Other noncurrent liabilities	680.2	687.1
Total liabilities	6,666.0	6,138.0
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred Stock, $.01 par value; 30,000,000 shares authorized; issued and outstanding - none	0.0	0.0
Additional paid-in capital	8,087.5	6,716.2
Retained earnings	18,968.3	10,893.0
Accumulated other comprehensive (loss) income	(26.2)	29.3
Treasury Stock, at cost; 19,392,961 shares in 2021 and 16,431,520 shares in 2020	(8,260.9)	(6,613.3)
Total stockholders' equity	18,768.8	11,025.3
Total liabilities and stockholders' equity	25,434.8	17,163.3
Class A Stock
Stockholders' equity:
Common stock	0.0	0.0
Common Stock
Stockholders' equity:
Common stock	$ 0.1	$ 0.1