Financing Agreements - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Due from Related Parties	$ 129	$ 0
Voya Financial, Inc. \| Reciprocal Loan Agreement
Short-term Debt [Line Items]
Interest Income, Related Party	$ 2
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%
Due from Related Parties	$ 129

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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