Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS:
Cash and cash equivalents	$ 434,517	$ 383,824
Short-term investments	426,053	371,154
Restricted investments	5,560	5,560
Accounts receivable, net	381,526	464,847
Inventories:
Raw materials	117,544	113,925
Work in process	149,249	142,589
Finished goods	334,260	338,290
Total inventories	601,053	594,804
Other current assets	185,488	156,460
Total current assets	2,034,197	1,976,649
Property, plant and equipment, at cost	1,295,884	1,305,150
Less: accumulated depreciation and amortization	(811,561)	(811,654)
Property, plant and equipment, net	484,323	493,496
Goodwill, net	501,903	506,069
Purchased intangibles, net	150,662	174,113
Other investments	3,474,321	1,027,736
Other assets	73,256	94,949
Total assets	6,718,662	4,273,012
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable, accrued payroll and employee benefits	257,028	306,814
Current maturities of long-term debt and notes payable	1,772	420
Income and other taxes payable	44,783	39,941
Other current liabilities	149,576	155,521
Total current liabilities	453,159	502,696
Long-term debt, net of current maturities	438,803	434,581
Deferred income taxes	753,948	222,209
Other long-term liabilities	172,271	183,276
Total liabilities	1,818,181	1,342,762
Stockholders' equity:
Additional paid-in capital	382,393	361,231
Retained earnings	4,550,601	1,830,439
Accumulated other comprehensive income	(32,299)	738,794
Total stockholders' equity	4,900,481	2,930,250
Total liabilities and stockholders' equity	6,718,662	4,273,012
Common Class A [Member]
Stockholders' equity:
Common stock	2	2
Common Class B [Member]
Stockholders' equity:
Common stock	1	1
Treasury Class A [Member]
Stockholders' equity:
Treasury Stock, Value	(128)	(128)
Treasury Class B [Member]
Stockholders' equity:
Treasury Stock, Value	$ (89)	$ (89)

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682