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Property, Plant and Equipment (Summary of Changes in Property, Plant and Equipment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, plant and equipment, gross beginning	$ 1,545.3	$ 1,582.7	$ 1,434.1
Capital Expenditures	13.9	135.9	152.4
Transfers and Retirements	(1,191.1)	(173.3)	(3.8)
Property, plant and equipment, gross ending	368.1	1,545.3	1,582.7
Accumulated depreciation and amortization, gross beginning	(358.2)	(351.3)	(319.0)
Accumulated depreciation and amortization, depreciation	(27.0)	(42.7)	(36.1)
Accumulated depreciation and amortization, retirements	68.1	35.8	3.8
Accumulated depreciation and amortization, gross ending	(317.1)	(358.2)	(351.3)
Property, plant and equipment, net beginning	1,187.1	1,231.4	1,115.1
Property, plant and equipment, net capital expenditures	(13.1)	93.2	116.3
Property, plant and equipment, net transfers and retirements	(1,123.0)	(137.5)
Property, plant and equipment, net ending	51.0	1,187.1	1,231.4
Construction Work in Progress [Member]
Property, plant and equipment, gross beginning	1,111.2	1,126.3	991.4
Capital Expenditures	13.6	135.9	149.4
Transfers and Retirements	(1,122.1)	(151.0)	(14.5)
Property, plant and equipment, gross ending	2.7	1,111.2	1,126.3
Leasehold Improvements [Member]
Property, plant and equipment, gross beginning	182.9	187.3	182.6
Transfers and Retirements	0.8	(4.4)	4.7
Property, plant and equipment, gross ending	183.7	182.9	187.3
Machinery and Equipment [Member]
Property, plant and equipment, gross beginning	251.2	269.1	260.1
Capital Expenditures	0.3		3.0
Transfers and Retirements	(69.8)	(17.9)	6.0
Property, plant and equipment, gross ending	$ 181.7	$ 251.2	$ 269.1

X

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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

-Publisher AICPA

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-Paragraph 5

-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.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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X

- Definition

The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of sales or disposals of property, plant and equipment during the period.

+ References

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

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-Number 12

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-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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- Definition

The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of write-downs of property, plant and equipment.

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Acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-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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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 5

-Subparagraph b, c

-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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Current year reclassification, impairment, donation, or other change to long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Property, Plant And Equipment, Net Capital Expenditures

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