Business, Basis of Presentation and Significant Accounting Policies - Business and Investments (Details) $ in Millions			12 Months Ended
	Jun. 09, 2021 USD ($) professional	Mar. 01, 2021 USD ($) shares	Dec. 31, 2021 segment shares	Dec. 31, 2021 shares	Dec. 31, 2021 Rate shares	Dec. 31, 2020 shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment			1
Common stock, shares issued			55,000	55,000	55,000	55,000
Rate required of collateral as a percent of market value of loans securities				102.00%	102.00%
Commercial portfolio segment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, threshold period past due			60 days	60 days	60 days
Financing receivable, threshold past due, nonaccrual			90 days	90 days	90 days
Resolution (Life U.S. Intermediate Holdings Ltd.)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred Stock, Shares Issued		73,000,000
Independent Financial Planning Channel | Cetera Financial Group, Inc | Discontinued Operations, Disposed of by Sale
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Disposal Group, Including Discontinued Operation, Number Of Financial Professionals Transferred | professional	800
Disposal Group, Including Discontinued Operation, Assets | $	$ 38,000
Disposal Group, Including Discontinued Operation, Number Of Financial Professionals Retained | professional	500
Voya Special Investments, Inc
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common stock, shares issued		0.499
Security Life of Denver Company
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Notes Issued | $		$ 80