Condensed Consolidated Statements of Cash Flows (Unaudited) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Cash Flows from Operating Activities:
Net cash (used in) provided by operating activities - continuing operations	$ 784	$ 534
Net cash provided by operating activities - discontinued operations	(352)	15
Net cash (used in) provided by operating activities	432	549
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	2,663	3,789
Equity securities	5	15
Mortgage loans on real estate	288	544
Limited partnerships/corporations	123	105
Acquisition of:
Fixed maturities	(3,055)	(3,291)
Equity securities	(2)	(23)
Mortgage loans on real estate	(313)	(303)
Limited partnerships/corporations	(187)	(184)
Short-term investments, net	(5)	(20)
Derivatives, net	104	69
Sales from consolidated investment entities	221	329
Purchases within consolidated investment entities	(567)	(572)
Collateral (delivered) received, net	(30)	(177)
Other investments, net	27	(55)
Net cash used in investing activities - discontinued operations	(222)	(153)
Net cash (used in) provided by investing activities	(950)	73
Cash Flows from Financing Activities:
Deposits received for investment contracts	3,089	2,153
Maturities and withdrawals from investment contracts	(2,928)	(2,846)
Settlements on deposit contracts	(4)	(6)
Borrowings of consolidated investment entities	331	304
Repayments of borrowings of consolidated investment entities	(460)	(407)
Contributions from (distributions to) participants in consolidated investment entities, net	682	282
Proceeds from issuance of common stock, net	2	2
Proceeds from issuance of preferred stock, net	0	293
Share-based compensation	(15)	(17)
Common stock acquired - Share repurchase	(366)	(686)
Dividends paid on common stock	(39)	(3)
Dividends paid on preferred stock	(18)	(10)
Principal payments for financing leases	(10)	0
Net cash provided by financing activities - discontinued operations	305	263
Net cash provided by (used in) financing activities	569	(678)
Net (decrease) increase in cash and cash equivalents	51	(56)
Cash and cash equivalents, beginning of period	1,472	1,538
Cash and cash equivalents, end of period	1,523	1,482
Less: Cash and cash equivalents of discontinued operations, end of period	413	304
Cash and cash equivalents of continuing operations, end of period	1,110	1,178
Consolidating Adjustments
Cash Flows from Operating Activities:
Net cash (used in) provided by operating activities	(321)	(435)
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	0	0
Equity securities	0	0
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Acquisition of:
Fixed maturities	0	0
Equity securities	0	0
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Short-term investments, net	0	0
Derivatives, net	0	0
Sales from consolidated investment entities	0	0
Purchases within consolidated investment entities	0	0
Collateral (delivered) received, net	0	0
Other investments, net	0	0
Net cash used in investing activities - discontinued operations	0	0
Net cash (used in) provided by investing activities	(50)	(1,146)
Cash Flows from Financing Activities:
Deposits received for investment contracts	0	0
Maturities and withdrawals from investment contracts	0	0
Settlements on deposit contracts	0	0
Borrowings of consolidated investment entities	0	0
Repayments of borrowings of consolidated investment entities	0	0
Contributions from (distributions to) participants in consolidated investment entities, net	0	0
Proceeds from issuance of common stock, net	0	0
Proceeds from issuance of preferred stock, net		0
Share-based compensation	0	0
Common stock acquired - Share repurchase	0	0
Dividends paid on common stock	0	0
Dividends paid on preferred stock	0	0
Principal payments for financing leases	0
Net cash provided by financing activities - discontinued operations	0	0
Net cash provided by (used in) financing activities	371	1,581
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Less: Cash and cash equivalents of discontinued operations, end of period	0	0
Cash and cash equivalents of continuing operations, end of period	0	0
Parent Issuer
Cash Flows from Operating Activities:
Net cash (used in) provided by operating activities	53	(83)
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	0	0
Equity securities	0	13
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Acquisition of:
Fixed maturities	0	0
Equity securities	0	(21)
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Short-term investments, net	0	0
Derivatives, net	(6)	0
Sales from consolidated investment entities	0	0
Purchases within consolidated investment entities	0	0
Collateral (delivered) received, net	23	0
Other investments, net	0	0
Net cash used in investing activities - discontinued operations	0	0
Net cash (used in) provided by investing activities	228	751
Cash Flows from Financing Activities:
Deposits received for investment contracts	0	0
Maturities and withdrawals from investment contracts	0	0
Settlements on deposit contracts	0	0
Borrowings of consolidated investment entities	0	0
Repayments of borrowings of consolidated investment entities	0	0
Contributions from (distributions to) participants in consolidated investment entities, net	0	0
Proceeds from issuance of common stock, net	2	2
Proceeds from issuance of preferred stock, net		293
Share-based compensation	(14)	(17)
Common stock acquired - Share repurchase	(366)	(686)
Dividends paid on common stock	(39)	(3)
Dividends paid on preferred stock	(18)	(10)
Principal payments for financing leases	0
Net cash provided by financing activities - discontinued operations	0	0
Net cash provided by (used in) financing activities	(250)	(425)
Net (decrease) increase in cash and cash equivalents	31	243
Cash and cash equivalents, beginning of period	212	209
Cash and cash equivalents, end of period	243	452
Less: Cash and cash equivalents of discontinued operations, end of period	0	0
Cash and cash equivalents of continuing operations, end of period	243	452
Subsidiary Guarantor
Cash Flows from Operating Activities:
Net cash (used in) provided by operating activities	306	435
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	0	0
Equity securities	0	0
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Acquisition of:
Fixed maturities	0	0
Equity securities	0	0
Mortgage loans on real estate	0	0
Limited partnerships/corporations	0	0
Short-term investments, net	0	0
Derivatives, net	0	0
Sales from consolidated investment entities	0	0
Purchases within consolidated investment entities	0	0
Collateral (delivered) received, net	0	0
Other investments, net	0	0
Net cash used in investing activities - discontinued operations	0	(128)
Net cash (used in) provided by investing activities	24	255
Cash Flows from Financing Activities:
Deposits received for investment contracts	0	0
Maturities and withdrawals from investment contracts	0	0
Settlements on deposit contracts	0	0
Borrowings of consolidated investment entities	0	0
Repayments of borrowings of consolidated investment entities	0	0
Contributions from (distributions to) participants in consolidated investment entities, net	0	0
Proceeds from issuance of common stock, net	0	0
Proceeds from issuance of preferred stock, net		0
Share-based compensation	0	0
Common stock acquired - Share repurchase	0	0
Dividends paid on common stock	0	0
Dividends paid on preferred stock	0	0
Principal payments for financing leases	0
Net cash provided by financing activities - discontinued operations	0	0
Net cash provided by (used in) financing activities	(330)	(692)
Net (decrease) increase in cash and cash equivalents	0	(2)
Cash and cash equivalents, beginning of period	0	2
Cash and cash equivalents, end of period	0	0
Less: Cash and cash equivalents of discontinued operations, end of period	0	0
Cash and cash equivalents of continuing operations, end of period	0	0
Non-Guarantor Subsidiaries
Cash Flows from Operating Activities:
Net cash (used in) provided by operating activities	394	632
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	2,663	3,789
Equity securities	5	2
Mortgage loans on real estate	288	544
Limited partnerships/corporations	123	105
Acquisition of:
Fixed maturities	(3,055)	(3,291)
Equity securities	(2)	(2)
Mortgage loans on real estate	(313)	(303)
Limited partnerships/corporations	(187)	(184)
Short-term investments, net	(5)	(20)
Derivatives, net	110	69
Sales from consolidated investment entities	221	329
Purchases within consolidated investment entities	(567)	(572)
Collateral (delivered) received, net	(53)	(177)
Other investments, net	27	(55)
Net cash used in investing activities - discontinued operations	(222)	(25)
Net cash (used in) provided by investing activities	(1,152)	213
Cash Flows from Financing Activities:
Deposits received for investment contracts	3,089	2,153
Maturities and withdrawals from investment contracts	(2,928)	(2,846)
Settlements on deposit contracts	(4)	(6)
Borrowings of consolidated investment entities	331	304
Repayments of borrowings of consolidated investment entities	(460)	(407)
Contributions from (distributions to) participants in consolidated investment entities, net	682	282
Proceeds from issuance of common stock, net	0	0
Proceeds from issuance of preferred stock, net		0
Share-based compensation	(1)	0
Common stock acquired - Share repurchase	0	0
Dividends paid on common stock	0	0
Dividends paid on preferred stock	0	0
Principal payments for financing leases	(10)
Net cash provided by financing activities - discontinued operations	305	263
Net cash provided by (used in) financing activities	778	(1,142)
Net (decrease) increase in cash and cash equivalents	20	(297)
Cash and cash equivalents, beginning of period	1,260	1,327
Cash and cash equivalents, end of period	1,280	1,030
Less: Cash and cash equivalents of discontinued operations, end of period	413	304
Cash and cash equivalents of continuing operations, end of period	867	726
Accounting Standards Update 2016-02
Non-cash investing and financing activities:
Initial recognition of operating leases upon adoption of ASU 2016-02	0	146
Leased assets in exchange for finance lease liabilities	$ 0	$ 68

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Subparagraph (a)
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- Definition

The cash outflow to reacquire common stock during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.

+ References

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Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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Aggregate cash payments for a combination of transactions that are classified as investing activities in which assets, which may include securities, other types of investments, or productive assets, are purchased from third-party sellers. This element can be used by entities to aggregate payments for all asset purchases that are classified as investing activities.

+ References

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- Definition

Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 13
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 11
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-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26853-111562

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- Definition

The cash outflow to acquire equity securities classified as available-for-sale securities, because they are not classified as trading securities.

+ References

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- References

No definition available.

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- Definition

Cash outflow related to the acquisition or continued holding of limited partnership interests held for investment purposes.

+ References

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- Definition

The cash outflow from the purchase of receivables arising from the mortgage note on real estate.

+ References

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- Definition

The cash inflow from the additional capital contribution to the entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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- Definition

Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

+ References

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- Definition

Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Definition

Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest.

+ References

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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 11
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Definition

The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from Sales of Loans Held For Investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- References

No definition available.

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Balance Type:	na
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- Definition

The cash outflow for a segregated fund account during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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- Definition

Borrowings of Consolidated Investment Entities

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No definition available.

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Namespace Prefix:	voya_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

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Data Type:	xbrli:stringItemType
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- Definition

Repayment Of Borrowings Of Noncontrolling Interests

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No definition available.

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- Definition

Settlements on Deposit Contracts

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No definition available.

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