Financing Agreements - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Short-term loan to affiliate	$ 626	$ 69
Due to affiliates	$ 90	95
Voya Financial, Inc. \| Affiliated Entity \| Reciprocal Loan Agreement
Short-term Debt [Line Items]
Percentage of Statutory admitted assets that can be borrowed under Reciprocal Loan Agreement	3.00%
Short-term loan to affiliate	$ 626	69
Due to affiliates	$ 28	$ 0

Contractual interest rate for funds borrowed, under the debt agreement.

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