Business, Basis of Presentation and Significant Accounting Policies (Details)	3 Months Ended	0 Months Ended
	Mar. 31, 2014 segments	Mar. 31, 2014 ING U.S. Inc.	Mar. 25, 2014 ING U.S. Inc.	Oct. 29, 2013 ING U.S. Inc.	May 07, 2013 ING U.S. Inc.	May 07, 2013 ING Group	Mar. 25, 2014 ING Group	Oct. 29, 2013 ING Group
Schedule of Equity Transactions [Line Items]
Offering of shares by parent company and subsidiaries			30,475,000	37,950,000	30,769,230	44,201,773
Shares repurchased		250,000	7,255,853
Ownership by affiliate of parent company							43.00%	57.00%
Number of reportable segments	3
Number of operating segments	5