Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Oct. 03, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 459,518	$ 422,177
Investments	1,851,216	1,633,211
Accounts receivable, less allowances for doubtful accounts and sales returns of $6,651 and $7,179 at October 3, 2015 and December 31, 2014, respectively	416,311	433,616
Inventories	281,786	246,430
Other current assets	85,016	118,302
Total current assets	3,093,847	2,853,736
Property, plant and equipment, net	325,554	321,583
Intangible assets, net	222,806	232,371
Goodwill	352,151	354,838
Other assets	126,886	115,406
Total assets	4,121,244	3,877,934
Current liabilities:
Notes payable and debt	175,176	225,243
Accounts payable	61,710	65,704
Accrued employee compensation	39,809	47,198
Deferred revenue and customer advances	157,992	129,706
Accrued income taxes	5,388	15,143
Accrued warranty	13,107	13,266
Other current liabilities	82,772	85,335
Total current liabilities	535,954	581,595
Long-term liabilities:
Long-term debt	1,455,000	1,240,000
Long-term portion of retirement benefits	77,353	85,230
Long-term income tax liabilities	19,482	20,397
Other long-term liabilities	64,899	56,046
Total long-term liabilities	1,616,734	1,401,673
Total liabilities	$ 2,152,688	$ 1,983,268
Commitments and contingencies (Notes 6, 7 and 10)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at October 3, 2015 and December 31, 2014	$ 0	$ 0
Common stock, par value $0.01 per share, 400,000 shares authorized, 157,252 and 156,716 shares issued, 81,654 and 83,147 shares outstanding at October 3, 2015 and December 31, 2014, respectively	1,573	1,567
Additional paid-in capital	1,451,601	1,392,494
Retained earnings	4,712,512	4,394,513
Treasury stock, at cost, 75,598 and 73,569 shares at October 3, 2015 and December 31, 2014, respectively	(4,070,314)	(3,815,203)
Accumulated other comprehensive loss	(126,816)	(78,705)
Total stockholders' equity	1,968,556	1,894,666
Total liabilities and stockholders' equity	$ 4,121,244	$ 3,877,934

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
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.