Rendering

Component: (Network and Table)
Network
2422403 - Disclosure - Share-Based Compensation - Valuation assumptions (Details)
(http://www.archcapgroup.com/role/ShareBasedCompensationValuationAssumptionsDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000947484 (http://www.sec.gov/CIK)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
 
 
 
Dividend yield
0.00%  
0.00%  
0.00%  
Expected volatility
21.70%  
22.10%  
22.80%  
Risk free interest rate
1.40%  
1.80%  
1.90%  
Expected option life
P6Y  
P6Y  
P6Y