Rendering

Component: (Network and Table)
Network
101310 - Disclosure - Pension Benefits and Savings Plans - Schedule of Change in Plan Assets (Detail)
(http://www.argolimited.com/20161231/taxonomy/role/DisclosurePensionBenefitsAndSavingsPlansScheduleOfChangeInPlanAssetsDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001091748 (http://www.sec.gov/CIK)
Compensation And Retirement Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Compensation And Retirement Disclosure [Abstract]
 
 
Fair value of plan assets at beginning of year
17,500,000  
19,200,000  
Actual return on plan assets
700,000  
(100,000) 
Employer contributions
200,000  
200,000  
Settlements and benefits paid
(1,700,000) 
(1,800,000) 
Fair value of plan assets at end of year
16,700,000  
 
17,500,000