Condensed Consolidating Financial Information - Narrative (Details)	Dec. 31, 2019	Dec. 31, 2018	Jan. 23, 2018	Jul. 05, 2017	Mar. 17, 2015	May 16, 2013
Senior Notes
Debt Instrument [Line Items]
Annual interest rate on loan					1.875%
5.7% Senior Notes, due 2043 | Senior Notes
Debt Instrument [Line Items]
Annual interest rate on loan	5.70%	5.70%
3.65% Senior Notes, due 2026 | Senior Notes
Debt Instrument [Line Items]
Annual interest rate on loan	3.65%	3.65%
4.8% Senior Notes, due 2046 | Senior Notes
Debt Instrument [Line Items]
Annual interest rate on loan	4.80%	4.80%
3.125% Senior Notes, due 2024 | Senior Notes
Debt Instrument [Line Items]
Annual interest rate on loan	3.125%	3.125%		3.125%
5.65% Fixed-to-Floating Rate Junior Subordinated Notes, due 2053 | Junior Subordinated Notes
Debt Instrument [Line Items]
Annual interest rate on loan	5.65%	5.65%				5.65%
4.7% Fixed-to-Floating Rate Junior Subordinated Notes, due 2048 | Junior Subordinated Notes
Debt Instrument [Line Items]
Annual interest rate on loan	4.70%	4.70%	4.70%
Voya Holdings Inc.
Debt Instrument [Line Items]
Ownership percentage by the company	100.00%