Intangible Assets and Goodwill (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite lived intangible assets
Gross Carrying Amount	$ 560,342,000	$ 593,155,000
Accumulated Amortization	(478,169,000)	(472,768,000)
Net Carrying Amount	82,173,000us-gaap_FiniteLivedIntangibleAssetsNet	120,387,000us-gaap_FiniteLivedIntangibleAssetsNet
Amortization expense for intangible assets	34,000,000us-gaap_AmortizationOfIntangibleAssets	37,000,000us-gaap_AmortizationOfIntangibleAssets	41,000,000us-gaap_AmortizationOfIntangibleAssets
Customer relationships
Finite lived intangible assets
Gross Carrying Amount	337,438,000	354,373,000
Accumulated Amortization	(263,121,000)	(251,388,000)
Net Carrying Amount	74,317,000	102,985,000
Supplier relationships
Finite lived intangible assets
Gross Carrying Amount	29,000,000	29,000,000
Accumulated Amortization	(27,913,000)	(25,013,000)
Net Carrying Amount	1,087,000	3,987,000
Software & technology
Finite lived intangible assets
Gross Carrying Amount	160,825,000	167,009,000
Accumulated Amortization	(154,610,000)	(155,009,000)
Net Carrying Amount	6,215,000	12,000,000
Trademarks & other
Finite lived intangible assets
Gross Carrying Amount	33,079,000	42,773,000
Accumulated Amortization	(32,525,000)	(41,358,000)
Net Carrying Amount	$ 554,000	$ 1,415,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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