Performance by Geographical Area (Tables)
|12 Months Ended|
Dec. 31, 2017
|Segments, Geographical Areas [Abstract]|
|Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas||
Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.
Reference 1: http://www.xbrl.org/2003/role/presentationRef
No definition available.