Commitments and Contingencies Commitments and Contingencies - Advances From Customers (Details) (USD $)					12 Months Ended					3 Months Ended
	Mar. 31, 2013		Dec. 30, 2012		Dec. 28, 2008 Customer, Polysilicon Purchaser [Member]	Mar. 31, 2013 Customer, Polysilicon Purchaser [Member]	Dec. 30, 2012 Customer, Polysilicon Purchaser [Member]	Mar. 31, 2013 Customer, AUOSP [Member]	Dec. 30, 2012 Customer, AUOSP [Member]	Mar. 31, 2013 Solar Power Products Advance Purchasers [Member]	Dec. 30, 2012 Solar Power Products Advance Purchasers [Member]
Schedule of Estimated Utilization of Advances From Customers [Line Items]
Customer Advances and Deposits						$ 55,300,000	$ 56,100,000	$ 188,600,000	$ 190,100,000
Customer Advances, Current	70,127,000	[1]	59,648,000	[1]		9,300,000	8,100,000	10,800,000	8,800,000
Customer Advances, Noncurrent	223,828,000	[1]	236,082,000	[1]		46,000,000	48,000,000	177,800,000	181,300,000
Advances Received From Customer					40,000,000					50,000,000	49,500,000
2013	64,612
2014	22,060
2015	26,387
2016	30,713
2017	35,039
Thereafter	115,144
Total	293,955
Letters of Credit Outstanding, Amount	$ 32,000,000

[1] The Company has related party balances in connection with transactions made with unconsolidated entities in which the Company has a direct equity investment. These related party balances are recorded within the "Prepaid expenses and other current assets," "Other long-term assets," "Accounts payable," "Customer advances, current portion," and "Customer advances, net of current portion" financial statement line items in the Condensed Consolidated Balance Sheets (see Note 4, Note 7, and Note 8).