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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Article 5

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

+ References

No definition available.

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For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

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-Subparagraph (a)

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Additions made to capitalized computer software costs during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

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For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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

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-Topic 350

-SubTopic 30

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-Paragraph 2

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of interest capitalized during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Significant Accounting Policies (Property, Plant and Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 24, 2011
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ 1,085,415,000	$ 886,237,000		$ 0
Capitalized Computer Software and Interest Costs [Abstract]
Decrease in depreciation expense from changes to estimated remaining useful lives		37,000,000
Capitalized computer software during the period	18,000,000	20,000,000	9,500,000
Capitalized interest costs	100,000us-gaap_InterestCostsCapitalized	100,000us-gaap_InterestCostsCapitalized	100,000us-gaap_InterestCostsCapitalized
Gross value of capitalized software	153,100,000	135,000,000
Amortization expense	11,400,000	15,400,000	47,200,000
Expected Amortization Expense, Fiscal Year Maturity [Abstract]
2015	11,000,000
2016	11,000,000
2017	11,000,000
2018	11,000,000
2019	11,000,000
Re-Valued Assets \| Minimum
Property, Plant and Equipment [Line Items]
Estimated life		2 years
Re-Valued Assets \| Maximum
Property, Plant and Equipment [Line Items]
Estimated life		23 years
Computer Software, Intangible Asset
Capitalized Computer Software and Interest Costs [Abstract]
Capitalized Computer Software, Accumulated Amortization	115,300,000	104,000,000
Expected Amortization Expense, Fiscal Year Maturity [Abstract]
2015	12,500,000
2016	10,800,000
2017	8,200,000
2018	5,100,000
2019	$ 1,200,000