Schedule II - Condensed Financial Information of Parent - Loans to Subsidiaries (Details) - Parent - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans to subsidiaries	$ 293,000,000	$ 89,000,000
Interest income, operating	$ 18,000,000	5,000,000	$ 3,000,000
Voya Institutional Plan Services, LLC | Subsidiary Loan, Due January 3, 2023, 3.83 percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	3.83%
Loans to subsidiaries	$ 0	31,000,000
Voya Institutional Plan Services, LLC | Subsidiary Loan, Due January 2, 2024, 5.44 percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	5.44%
Loans to subsidiaries	$ 31,000,000	$ 0
Voya Investment Management, LLC | Subsidiary Loan, Due January 13, 2023, 4.46 Percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate		4.46%
Loans to subsidiaries	0	$ 11,000,000
Voya Services Company | Subsidiary Loan, Due January 3, 2023, 3.83 percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate		3.83%
Loans to subsidiaries	$ 0	$ 47,000,000
Voya Services Company | Subsidiary Loan, Due January 2, 2024, 5.44 percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	5.44%
Loans to subsidiaries	$ 185,000,000	0
Voya Payroll Management, Inc. | Subsidiary Loan, Due January 2, 2024, 5.44 percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	5.44%
Loans to subsidiaries	$ 11,000,000	0
Voya Holdings Inc. | Subsidiary Loan, Due January 18, 2024, 5.53 Percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	5.53%
Loans to subsidiaries	$ 44,000,000	0
Voya Holdings Inc. | Subsidiary Loan, Due January 12, 2024, 5.51 Percent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate	5.51%
Loans to subsidiaries	$ 22,000,000	$ 0