Segment Information (Long-Lived Assets by Major Country) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long-Lived Assets	$ 1,125.6	$ 1,156.9	$ 1,125.9
Brazil [Member]
Long-Lived Assets	396.9	400.9	302.7
UNITED STATES
Long-Lived Assets	174.4	196.1	225.9
All other [Member]
Long-Lived Assets	$ 554.3	$ 559.9	$ 597.3

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
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant