Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 6,275,698	$ 5,988,187
Marketable securities	685,187	670,710
Accounts receivable, net	1,100,372	885,352
Inventories	333,456	280,777
Prepaid expenses and other current assets	457,827	308,353
Total current assets	8,852,540	8,133,379
Property and equipment, net	1,042,347	958,534
Goodwill	1,002,158	1,002,158
Intangible assets	400,000	400,000
Deferred tax assets	933,839	882,779
Operating lease assets	312,343	325,564
Other assets	75,518	49,394
Total assets	12,618,745	11,751,808
Current liabilities:
Accounts payable	127,863	155,139
Accrued expenses	1,584,992	1,404,971
Other current liabilities	201,409	317,423
Total current liabilities	1,914,264	1,877,533
Long-term finance lease liabilities	513,255	539,042
Long-term operating lease liabilities	363,545	350,463
Long-term contingent consideration	188,500	189,600
Other long-term liabilities	108,473	108,355
Total liabilities	3,088,037	3,064,993
Commitments and contingencies	0	0
Shareholders’ equity:
Preferred stock, $0.01 par value; 1,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value; 500,000 shares authorized, 256,206 and 259,890 shares issued and outstanding, respectively	2,562	2,599
Additional paid-in capital	7,085,950	7,894,027
Accumulated other comprehensive income (loss)	11,537	(68,480)
Retained earnings	2,430,659	858,669
Total shareholders’ equity	9,530,708	8,686,815
Total liabilities and shareholders’ equity	$ 12,618,745	$ 11,751,808