XML 93 R77.htm IDEA: XBRL DOCUMENT v3.8.0.1

Segment information - Customer Revenue by Classes of Similar Products or Services (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue from External Customer [Line Items]
Revenue	$ 744.8	$ 666.3	$ 666.2	$ 664.5	$ 721.7	$ 683.3	$ 748.9	$ 666.8	$ 2,741.8	$ 2,820.7	$ 3,015.1
Services
Revenue from External Customer [Line Items]
Revenue									2,328.2	2,406.3	2,605.6
Technology
Revenue from External Customer [Line Items]
Revenue									413.6	414.4	409.5
Cloud & infrastructure services | Services
Revenue from External Customer [Line Items]
Revenue									1,317.0	1,352.9	1,513.1
Application services | Services
Revenue from External Customer [Line Items]
Revenue									808.3	859.0	868.9
BPO services | Services
Revenue from External Customer [Line Items]
Revenue									$ 202.9	$ 194.4	$ 223.6

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=uis_ServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=uis_TechnologyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=uis_CloudAndInfrastructureServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=uis_ApplicationServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=uis_BusinessProcessOutsourcingServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: