Quarterly Financial Data (Unaudited) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Quarterly Financial Data [Abstract]
Total revenue	$ 421.3	$ 570.5	$ 364.8	$ 561.5	$ 462.4	$ 374.5	$ 454.4	$ 380.5	$ 1,918.1	$ 1,671.8	$ 2,035.4
Total cost of sales	371.9	533.0	352.5	522.7	452.2	347.6	421.2	366.6	1,780.1	1,587.6	1,877.0
Gross profit	49.4	37.5	12.3	38.8	10.2	26.9	33.2	13.9	138.0	84.2	158.4
Advanced technology costs	1,146.4	45.1	85.7	36.8	187.0	26.0	33.5	26.7	1,314.0	273.2	110.2
Selling, general and administrative	13.6	12.8	14.8	14.9	14.3	15.6	16.7	15.5	56.1	62.1	58.9
Special charge for workforce reductions and advisory costs	1.2	1.5	3.2	6.4					12.3
Other (income)	(47.5)	(34.6)	(10.0)					(3.7)	(92.1)	(3.7)	(44.4)
Operating income (loss)	(1,064.3)	12.7	(81.4)	(19.3)	(191.1)	(14.7)	(17.0)	(24.6)	(1,152.3)	(247.4)	33.7
Preferred stock issuance costs											6.6
Interest expense	12.7	12.3	12.7	12.7	11.3	0.2	0.1		50.4	11.6	0.6
Interest (income)	(1.5)	(0.2)	(0.1)	(0.1)	(0.1)	(0.1)	(0.1)	(0.2)	(1.9)	(0.5)	(0.4)
Income (loss) before income taxes	(1,075.5)	0.6	(94.0)	(31.9)	(202.3)	(14.8)	(17.0)	(24.4)	(1,200.8)	(258.5)	26.9
Provision (benefit) for income taxes	8.8	(3.9)	(2.0)	(3.1)	244.1	(7.9)	4.2	(7.8)	(0.2)	232.6	19.4
Net income (loss)	$ (1,084.3)	$ 4.5	$ (92.0)	$ (28.8)	$ (446.4)	$ (6.9)	$ (21.2)	$ (16.6)	$ (1,200.6)	$ (491.1)	$ 7.5
Net income (loss) per share - basic									$ (9.84)	$ (4.07)	$ 0.07
Net income (loss) per share - diluted	$ (8.84)	$ 0.04	$ (0.76)	$ (0.24)	$ (3.68)	$ (0.06)	$ (0.18)	$ (0.14)	$ (9.84)	$ (4.07)	$ 0.05
Weighted-average number of shares outstanding:
Basic									122.0	120.8	112.8
Diluted	122.6	122.6	121.7	122.3	121.3	121.3	121.1	119.6	122.0	120.8	166.6

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Paragraph 5A

-Chapter 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 4

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6386349&loc=d3e3636-108311

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 40

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Statement of Financial Accounting Standard (FAS)

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-Name Accounting Standards Codification

-Topic 260

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-Section 50

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-Subparagraph (a)

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

-Paragraph 4

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 16

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 40

-Subparagraph a

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

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-Publisher FASB

-Name Accounting Standards Codification

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