Acquisitions, Intangible Assets and Goodwill (Goodwill) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Goodwill	$ 1,745,957
Acquisitions	21,558
Foreign currency translation	(1,097)
Goodwill	1,766,418
North America Mailing
Goodwill [Roll Forward]
Goodwill	296,053
Acquisitions	0
Foreign currency translation	3,993
Goodwill	300,046
International Mailing
Goodwill [Roll Forward]
Goodwill	148,351
Acquisitions	0
Foreign currency translation	5,552
Goodwill	153,903
Small & Medium Business Solutions
Goodwill [Roll Forward]
Goodwill	444,404
Acquisitions	0
Foreign currency translation	9,545
Goodwill	453,949
Production Mail
Goodwill [Roll Forward]
Goodwill	105,757
Acquisitions	0
Foreign currency translation	(1,382)
Goodwill	104,375
Presort Services
Goodwill [Roll Forward]
Goodwill	196,890
Acquisitions	0
Foreign currency translation	0
Goodwill	196,890
Enterprise Business Solutions
Goodwill [Roll Forward]
Goodwill	302,647
Acquisitions	0
Foreign currency translation	(1,382)
Goodwill	301,265
Software Solutions
Goodwill [Roll Forward]
Goodwill	674,976
Acquisitions	12,137
Foreign currency translation	(9,260)
Goodwill	677,853
Global Ecommerce
Goodwill [Roll Forward]
Goodwill	323,930
Acquisitions	9,421
Foreign currency translation	0
Goodwill	333,351
Digital Commerce Solutions
Goodwill [Roll Forward]
Goodwill	998,906
Acquisitions	21,558
Foreign currency translation	(9,260)
Goodwill	$ 1,011,204

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
-Subparagraph (a)
-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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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