Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
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+ 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)
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Segment and Geographic Information - Geographic Information (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
Segment and Geographic Information
Revenues	$ 593.9	$ 562.6	$ 656.2	$ 405.5	$ 398.8	$ 386.7	$ 390.5	$ 380.7	$ 2,218.2	$ 1,556.7	$ 1,474.0
Long-lived assets	524.6				286.0				524.6	286.0	313.7
Reportable Geographical Components \| U.S.
Segment and Geographic Information
Revenues									1,641.1	1,417.2	1,350.6
Long-lived assets	318.1				249.9				318.1	249.9	274.7
Reportable Geographical Components \| U.K.
Segment and Geographic Information
Revenues									504.6	78.1	65.6
Long-lived assets	192.8				25.9				192.8	25.9	29.1
Reportable Geographical Components \| Canada
Segment and Geographic Information
Revenues									19.4	19.3	21.7
Reportable Geographical Components \| Australia
Segment and Geographic Information
Revenues									28.4	25.4	20.5
Long-lived assets	8.6				8.0				8.6	8.0	2.6
Reportable Geographical Components \| Others
Segment and Geographic Information
Revenues									24.7	16.7	15.6
Long-lived assets	5.1				2.2				5.1	2.2	7.3
Reportable Geographical Components \| Total international
Segment and Geographic Information
Revenues									577.1	139.5	123.4
Long-lived assets	$ 206.5				$ 36.1				$ 206.5	$ 36.1	$ 39.0