Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table reflects a summary of the impact of the retrospectively adjusted balances on the Company's Consolidated Statements of Operations for the twelve months ended December 31, 2014 and 2013.

Twelve months ended December 31, 2014
Income Statement	As previously reported(1)			Adjustments			As adjusted
Net investment income	$	729,207		$	29,079		$	758,286
Total revenue	3,591,016			29,079			3,620,095
Income before income taxes	755,598			29,079			784,677
Income taxes	(227,524		)	(29,079		)	(256,603		)
Net income	542,939			—			542,939
Twelve months ended December 31, 2013
Income Statement	As previously reported(1)			Adjustments			As adjusted
Net investment income	$	709,743		$	24,907		$	734,650
Total revenue	3,469,346			24,907			3,494,253
Income before income taxes	730,408			24,907			755,315
Income taxes	(223,203		)	(24,907		)	(248,110		)
Net income	528,472			—			528,472

(1) Total revenue, income before income taxes, and income taxes were adjusted for discontinued operations as discussed earlier in this note.

Summary of Assumptions for Options Granted

A summary of assumptions for options granted in each of the three years 2013 through 2015 is as follows:

	2015		2014		2013
Volatility factor	23.6	%	30.9	%	38.5	%
Dividend yield	0.9	%	0.9	%	1.1	%
Expected term (in years)	5.66		5.65		5.62
Risk-free rate	1.6	%	1.9	%	1.1	%