CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021
Cash flows from operating activities:
Net income	$ 543,200	$ 790,549
Adjustments to reconcile net income from operations to net cash provided by operating activities:
Depreciation	67,902	67,866
Stock-based compensation	37,420	34,649
Provision for excess and obsolete inventory	18,929	11,775
Amortization	15,012	27,626
Losses (gains) on investments	11,436	(4,750)
Deferred taxes	(28,373)	(10,732)
Contingent consideration fair value adjustments	0	(7,227)
Loss on convertible debt conversions	0	25,397
Retirement plan actuarial (gains) losses	0	(627)
Other	740	243
Changes in operating assets and liabilities, net of businesses acquired:
Accounts receivable	4,248	(103,299)
Inventories	(68,817)	21,943
Prepayments and other assets	(94,331)	(138,564)
Accounts payable and other liabilities	(71,682)	65,064
Deferred revenue and customer advances	(5,896)	8,699
Retirement plans contributions	(3,897)	(4,123)
Income taxes	(31,370)	(17,406)
Net cash provided by operating activities	394,521	767,083
Cash flows from investing activities:
Purchases of property, plant and equipment	(128,672)	(103,162)
Purchases of marketable securities	(267,175)	(509,470)
Proceeds from sales of marketable securities	259,200	209,437
Proceeds from maturities of marketable securities	182,092	571,277
Purchase of investment	0	(12,000)
Net cash provided by investing activities	45,445	156,082
Cash flows from financing activities:
Issuance of common stock under stock purchase and stock option plans	28,733	32,590
Repurchase of common stock	(750,000)	(406,180)
Payments related to net settlement of employee stock compensation awards	(32,987)	(32,045)
Payments of convertible debt principal	(52,005)	(301,997)
Dividend payments	(52,578)	(49,711)
Net cash used for financing activities	(858,837)	(757,343)
Effects of exchange rate changes on cash and cash equivalents	7,418	(489)
(Decrease) increase in cash and cash equivalents	(411,453)	165,333
Cash and cash equivalents at beginning of period	1,122,199	914,121
Cash and cash equivalents at end of period	710,746	1,079,454
Non-cash investing activities:
Capital expenditures incurred but not yet paid	$ 2,349	$ 2,286