Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
ASSETS:
Cash and cash equivalents	$ 840,325,000	$ 660,672,000
Short-term investments	314,102,000	453,973,000
Restricted investments	5,560,000	5,560,000
Accounts receivable, net	402,241,000	392,672,000
Inventories:
Raw materials	149,117,000	109,570,000
Work in process	158,577,000	146,131,000
Finished goods	332,534,000	298,306,000
Total inventories	640,228,000	554,007,000
Prepaid expenses	111,296,000	102,331,000
Other current assets	10,109,000	10,940,000
Total current assets	2,323,861,000	2,180,155,000
Property, plant, and equipment	1,404,622,000	1,382,172,000
Less: accumulated depreciation and amortization	923,673,000	882,833,000
Property, plant and equipment, net	480,949,000	499,339,000
Operating lease right-of-use assets	196,652,000	201,868,000
Goodwill, net	291,916,000	264,131,000
Purchased intangibles, net	205,305,000	145,525,000
Other investments	8,439,897,000	4,638,205,000
Other assets	82,351,000	79,636,000
Total assets	12,020,931,000	8,008,859,000
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable	132,994,000	107,014,000
Accrued payroll and employee benefits	190,091,000	180,084,000
Current maturities of long-term debt and notes payable	426,636,000	426,172,000
Income and other taxes payable	41,646,000	36,285,000
Current operating lease liabilities	34,387,000	35,365,000
Other current liabilities	160,903,000	120,575,000
Total current liabilities	986,657,000	905,495,000
Long-term debt, net of current maturities	12,241,000	13,579,000
Deferred income taxes	1,842,659,000	997,787,000
Operating lease liabilities	172,144,000	176,018,000
Other long-term liabilities	182,085,000	160,923,000
Total liabilities	3,195,786,000	2,253,802,000
Stockholders' equity:
Additional paid-in capital	412,313,000	410,020,000
Retained earnings	8,428,925,000	5,470,779,000
Accumulated other comprehensive loss	83,971,000	(87,348,000)
Total stockholders' equity	8,825,145,000	5,755,057,000
Total liabilities and stockholders' equity	12,020,931,000	8,008,859,000
Accounts receivable allowance for doubtful accounts	19,370,000	20,205,000
Common Class A [Member]
Stockholders' equity:
Common stock	$ 2,000	$ 2,000
Common Stock, Shares, Issued	25,044,738	24,966,035
Common Stock, Shares, Outstanding	24,739,501	24,835,804
Common Class B [Member]
Stockholders' equity:
Common stock	$ 1,000	$ 1,000
Common Stock, Shares, Issued	5,091,003	5,089,532
Common Stock, Shares, Outstanding	5,091,003	5,089,532
Treasury Class A [Member]
Stockholders' equity:
Treasury stock	$ (100,067,000)	$ (38,397,000)
Treasury Stock, Shares	305,237	130,231