Investments - Number of Fixed Maturity Securities with Gross Unrealized Gains and Losses (Detail)	Mar. 31, 2014 Security	Dec. 31, 2013 Security
Investments Debt And Equity Securities [Abstract]
Gross Unrealized Losses Less than or equal to 12 months	8	12
Gross Unrealized Losses Greater than 12 months	7	7
Gross Unrealized Gains	87	83