Consolidated Statement Of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010
Cash flows from operating activities:
Net income	$ 56.0	$ 231.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	166.8	122.4
Gain on sale and disposal of fixed assets	(6.9)	(5.2)
Non-cash manufacturing expenses associated with favorable supply agreement	(80.4)	0
Non-cash portion of loss on debt repurchase	(5.3)	(0.7)
Gain on acquisition of SANYO Semiconductor	(58.0)	0
Amortization of debt issuance costs and debt discount	1.8	1.9
Provision for excess inventories	18.7	2.7
Non-cash stock compensation expense	26.9	41.3
Non-cash interest	26.5	25.3
Non-cash asset impairment charges	61.2	0
Impairment of Intangible Assets, Finite-lived	0.5	0
Deferred income taxes	(7.2)	5.3
Other	0.5	(1.5)
Changes in assets and liabilities (exclusive of the impact of acquisitions):
Receivables	9.7	(43.0)
Inventories	85.9	(66.8)
Other assets	(2.7)	(1.4)
Accounts payable	(98.9)	32.8
Accrued expenses	(44.6)	9.9
Income taxes payable	8.7	(2.6)
Accrued interest	3.2	3.6
Deferred income on sales to distributors	38.9	35.7
Other long-term liabilities	8.1	(0.8)
Net cash provided by operating activities	380.8	392.0
Cash flows from investing activities:
Purchases of property, plant and equipment	(259.3)	(145.9)
Purchase of businesses, net of cash acquired	(17.9)	(91.1)
Deposits utilized for purchases of property, plant and equipment	1.0	1.2
Proceeds from sales of property, plant and equipment	3.3	0
Proceeds from held-to-maturity securities	0	45.5
Purchases of held-to-maturity securities	(178.4)	0
Uses of restricted cash	142.1	0
Net Cash Used in Investing Activities	(309.2)	(190.3)
Cash flows from financing activities:
Proceeds from issuance of common stock under the employee stock purchase plan	6.1	5.1
Proceeds from debt issuance	64.0	79.0
Proceeds from exercise of stock options	58.3	7.9
Payment of capital lease obligation	(28.1)	(24.8)
Purchase of treasury stock	(15.4)	(10.2)
Repayment of long-term debt	(71.0)	(222.5)
Net cash provided by (used in) financing activities	(42.3)	(165.5)
Effect of exchange rate changes on cash and cash equivalents	6.7	1.0
Net increase in cash and cash equivalents	36.0	37.2
Cash and cash equivalents, beginning of period	623.3	525.7
Cash and cash equivalents, end of period	659.3	562.9
Two Point Six Two Five Percentage Convertible Senior Subordinated Notes Due Two Thousand Twenty Six [Member]
Cash flows from financing activities:
Repayment of long-term debt	$ 56.2	$ 0