Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Investments:
Fixed maturities, available-for-sale, at fair value	$ 39,663.0	$ 36,897.0
Fixed maturities, at fair value using the fair value option	2,707.0	2,233.0
Equity securities, at fair value (cost of $196 as of 2019 and $247 as of 2018)	196.0	247.0
Short-term investments	68.0	126.0
Mortgage loans on real estate, net of valuation allowance of $1 as of 2019 and $2 as of 2018	6,878.0	7,281.0
Policy loans	776.0	814.0
Limited partnerships/corporations	1,290.0	982.0
Derivatives	316.0	194.0
Other investments	385.0	379.0
Total investments	53,687.0	50,615.0
Cash and cash equivalents	1,181.0	1,237.0
Short-term investments under securities loan agreements, including collateral delivered	1,395.0	1,293.0
Accrued investment income	505.0	529.0
Premium receivable and reinsurance recoverable	3,732.0	3,843.0
Deferred policy acquisition costs, Value of business acquired	2,226.0	2,973.0
Current income taxes	0.0	17.0
Deferred income taxes	1,458.0	1,610.0
Other assets	902.0	1,027.0
Assets related to consolidated investment entities:
Assets held in consolidated investment entities	2,226.0	2,310.0
Assets held in separate accounts	81,670.0	69,931.0
Assets held for sale	20,069.0	20,045.0
Total assets	169,051.0	155,430.0
Liabilities and Shareholders' Equity:
Future policy benefits	9,945.0	9,587.0
Contract owner account balances	40,923.0	41,183.0
Payables under securities loan agreement, including collateral held	1,373.0	1,366.0
Short-term debt	1.0	1.0
Long-term debt	3,042.0	3,136.0
Derivatives	403.0	164.0
Pension and other post-employment provisions	468.0	551.0
Current income taxes	27.0	0.0
Other liabilities	1,345.0	1,375.0
Liabilities related to consolidated investment entities:
Collateralized loan obligations notes, at fair value using the fair value option	474.0	540.0
Other liabilities	652.0	688.0
Liabilities related to separate accounts	81,670.0	69,931.0
Liabilities held for sale	18,498.0	17,903.0
Total liabilities	158,821.0	146,425.0
Commitments and Contingencies (Note 19)
Shareholders' equity:
Preferred stock ($0.01 par value per share; $625 and $325 aggregate liquidation preference as of 2019 and 2018, respectively)	0.0	0.0
Common stock ($0.01 par value per share; 900,000,000 shares authorized; 140,726,677 and 272,431,745 shares issued as of 2019 and 2018, respectively; 132,325,790 and 150,978,184 shares outstanding as of 2019 and 2018, respectively)	2.0	3.0
Treasury stock (at cost; 8,400,887 and 121,453,561 shares as of 2019 and 2018, respectively)	(460.0)	(4,981.0)
Additional paid-in capital	11,184.0	24,316.0
Accumulated other comprehensive income (loss)	3,331.0	607.0
Retained earnings (deficit):
Appropriated-consolidated investment entities	0.0	0.0
Unappropriated	(4,649.0)	(11,732.0)
Total Voya Financial, Inc. shareholders' equity	9,408.0	8,213.0
Noncontrolling interest	822.0	792.0
Total shareholder's equity	10,230.0	9,005.0
Total liabilities and shareholder's equity	169,051.0	155,430.0
Limited partnerships/corporations, at fair value
Assets related to consolidated investment entities:
Assets held in consolidated investment entities	1,632.0	1,421.0
Cash and cash equivalents
Assets related to consolidated investment entities:
Assets held in consolidated investment entities	68.0	331.0
Corporate loans, at fair value using the fair value option
Assets related to consolidated investment entities:
Assets held in consolidated investment entities	513.0	542.0
Other assets
Assets related to consolidated investment entities:
Assets held in consolidated investment entities	13.0	16.0
Collateral pledged
Investments:
Securities pledged (amortized cost of $1,264 as of 2019 and $1,436 as of 2018)	$ 1,408.0	$ 1,462.0