Intangible Assets and Goodwill (Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Gross value before accumulated impairment		$ 1,672,721us-gaap_GoodwillGross
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	1,672,721us-gaap_Goodwill
Foreign currency translation	(37,550)
Goodwill	1,635,171us-gaap_Goodwill
North America Mailing
Goodwill [Line Items]
Gross value before accumulated impairment		309,448
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	309,448
Foreign currency translation	(13,871)
Goodwill	295,577
International Mailing
Goodwill [Line Items]
Gross value before accumulated impairment		162,146
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	162,146
Foreign currency translation	(12,110)
Goodwill	150,036
Small & Medium Business Solutions
Goodwill [Line Items]
Gross value before accumulated impairment		471,594
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	471,594
Foreign currency translation	(25,981)
Goodwill	445,613
Production Mail
Goodwill [Line Items]
Gross value before accumulated impairment		110,837
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	110,837
Foreign currency translation	(5,337)
Goodwill	105,500
Presort Services
Goodwill [Line Items]
Gross value before accumulated impairment		195,140
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	195,140
Foreign currency translation	0
Goodwill	195,140
Enterprise Business Solutions
Goodwill [Line Items]
Gross value before accumulated impairment		305,977
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	305,977
Foreign currency translation	(5,337)
Goodwill	300,640
Digital Commerce Solutions
Goodwill [Line Items]
Gross value before accumulated impairment		895,150
Accumulated impairment		0
Goodwill [Roll Forward]
Goodwill	895,150
Foreign currency translation	(6,232)
Goodwill	$ 888,918

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 50

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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