Asset backed loans and other invested assets.

No definition available.

Name:	hrg_AssetBackedLoansAndOtherInvestedAssets
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Assets fair value disclosure and measurement.

+ References

No definition available.

+ Details

Name:	hrg_AssetsFairValueDisclosureAndMeasurement
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	hrg_AvailableForSaleDebtSecuritiesFairValueDisclosureAbstract
Namespace Prefix:	hrg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contingent purchase price reduction receivable.

+ References

No definition available.

+ Details

Name:	hrg_ContingentPurchasePriceReductionReceivableFairValueDisclosure
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the fair value of the bifurcated conversion option for the preferred stock.

+ References

No definition available.

+ Details

Name:	hrg_EquityConversionOptionOfPreferredStock
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Held to maturity securities current Fair value disclosure.

+ References

No definition available.

+ Details

Name:	hrg_HeldToMaturitySecuritiesCurrentFairValueDisclosure
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Liabilities fair value disclosure and measurement.

+ References

No definition available.

+ Details

Name:	hrg_LiabilitiesFairValueDisclosureAndMeasurement
Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 7, 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 7

-Footnote 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

+ Details

Name:	us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FIN39-1

-Paragraph 10A, 10B

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 4, 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611

+ Details

Name:	us-gaap_DerivativeAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_DerivativeAssetsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References

+ Details

Name:	us-gaap_DerivativeLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DerivativeLiabilitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 825

-Section 25

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6487514&loc=d3e32427-158581

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 14

-Article 7

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 97

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of mandatorily redeemable preferred stock which the Company has issued and which is outstanding as of the balance sheet date. A financial instrument issued in the form of shares is mandatorily redeemable if it embodies an unconditional obligation requiring the issuer to redeem the instrument by transferring its assets at a specified or determinable date (or dates) or upon an event certain to occur. A financial instrument that embodies a conditional obligation to redeem the instrument by transferring assets upon an event not certain to occur becomes mandatorily redeemable and, therefore, becomes a liability - if that event occurs, the condition is resolved, or the event becomes certain to occur. A mandatorily redeemable financial instrument is classified as a liability unless the redemption is required to occur only upon the liquidation or termination of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 150

-Paragraph 9, 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 25

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e21216-110875

+ Details

Name:	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

For an unclassified balance sheet, this item represents investments in common and preferred stocks and other forms of securities that provide ownership interests in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph b

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(b))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_MarketableSecuritiesEquitySecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

+ References

No definition available.

+ Details

Name:	us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

+ Details

Name:	us-gaap_TradingSecuritiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair Value of Financial Instruments - Assets and Liabilities Carrying at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	Dec. 30, 2012	Sep. 30, 2012	Jan. 01, 2012	Sep. 30, 2011
Assets
Cash and cash equivalents	$ 1,103.7	$ 1,470.7	$ 2,204.8	$ 1,137.4
Derivatives, Assets
Derivative investments	156.4	200.7
Fixed maturity securities, available-for-sale:
Asset-backed loans	204.8	180.1
Derivatives, Liabilities
Equity conversion feature of preferred stock	163.1	232.0
Recurring [Member] \| Fair Value [Member]
Assets
Cash and cash equivalents	1,103.7	1,470.7
Contingent purchase price reduction receivable	41.0	41.0
Fixed maturity securities, available-for-sale:
Asset-backed loans	204.8	180.1
Total financial assets	18,363.6	18,433.3
Liabilities
Total debt	4,138.3	2,328.8
Derivatives, Liabilities
Equity conversion feature of preferred stock	163.1	232.0
Redeemable preferred stock, excluding equity conversion feature	377.8	368.9
Investment contracts, included in contractholder funds	12,442.7	12,271.9
Total financial liabilities	18,649.5	16,763.3
Recurring [Member] \| Fair Value [Member] \| U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	2,023.1	930.4
Recurring [Member] \| Fair Value [Member] \| Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivative investments	0.6	1.2
Derivatives, Liabilities
Derivative investments	10.6	10.0
Recurring [Member] \| Fair Value [Member] \| Commodity swap and option agreements [Member]
Derivatives, Assets
Derivative investments	1.8	2.0
Recurring [Member] \| Fair Value [Member] \| Call options [Member]
Derivatives, Assets
Derivative investments	156.4	200.7
Recurring [Member] \| Fair Value [Member] \| Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale	263.8	248.1
Recurring [Member] \| Fair Value [Member] \| FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative investments	1,517.0	1,550.8
Recurring [Member] \| Fair Value [Member] \| Future contracts [Member]
Derivatives, Liabilities
Derivative investments		0.9
Recurring [Member] \| Fair Value [Member] \| Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,290.7	1,027.9
Recurring [Member] \| Fair Value [Member] \| Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	563.6	553.8
Recurring [Member] \| Fair Value [Member] \| Corporates [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	9,874.2	11,009.0
Recurring [Member] \| Fair Value [Member] \| Hybrids [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	441.5	528.2
Recurring [Member] \| Fair Value [Member] \| Municipals [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,174.3	1,224.0
Recurring [Member] \| Fair Value [Member] \| Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	140.0	155.0
Recurring [Member] \| Fair Value [Member] \| Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	969.2	660.6
Recurring [Member] \| Carrying Amount [Member]
Assets
Cash and cash equivalents	1,103.7	1,470.7
Contingent purchase price reduction receivable	41.0	41.0
Fixed maturity securities, available-for-sale:
Asset-backed loans	204.8	180.1
Total financial assets	18,363.6	18,433.3
Liabilities
Total debt	3,917.8	2,167.0
Derivatives, Liabilities
Equity conversion feature of preferred stock	163.1	232.0
Redeemable preferred stock, excluding equity conversion feature	323.0	319.2
Investment contracts, included in contractholder funds	13,832.0	13,739.6
Total financial liabilities	19,763.5	18,019.5
Recurring [Member] \| Carrying Amount [Member] \| U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	2,023.1	930.4
Recurring [Member] \| Carrying Amount [Member] \| Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivative investments	0.6	1.2
Derivatives, Liabilities
Derivative investments	10.6	10.0
Recurring [Member] \| Carrying Amount [Member] \| Commodity swap and option agreements [Member]
Derivatives, Assets
Derivative investments	1.8	2.0
Recurring [Member] \| Carrying Amount [Member] \| Call options [Member]
Derivatives, Assets
Derivative investments	156.4	200.7
Recurring [Member] \| Carrying Amount [Member] \| Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale	263.8	248.1
Recurring [Member] \| Carrying Amount [Member] \| FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative investments	1,517.0	1,550.8
Recurring [Member] \| Carrying Amount [Member] \| Future contracts [Member]
Derivatives, Liabilities
Derivative investments		0.9
Recurring [Member] \| Carrying Amount [Member] \| Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,290.7	1,027.9
Recurring [Member] \| Carrying Amount [Member] \| Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	563.6	553.8
Recurring [Member] \| Carrying Amount [Member] \| Corporates [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	9,874.2	11,009.0
Recurring [Member] \| Carrying Amount [Member] \| Hybrids [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	441.5	528.2
Recurring [Member] \| Carrying Amount [Member] \| Municipals [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,174.3	1,224.0
Recurring [Member] \| Carrying Amount [Member] \| Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	140.0	155.0
Recurring [Member] \| Carrying Amount [Member] \| Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	969.2	660.6
Recurring [Member] \| Equity securities [Member] \| Fair Value [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	48.3	146.8
Recurring [Member] \| Equity securities [Member] \| Carrying Amount [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	48.3	146.8
Recurring [Member] \| Fixed maturities securities [Member] \| Fair Value [Member]
Fixed maturity securities, available-for-sale:
U.S. Treasuries and certificate of deposit, held-to-maturity	33.9	35.0
Recurring [Member] \| Fixed maturities securities [Member] \| Carrying Amount [Member]
Fixed maturity securities, available-for-sale:
U.S. Treasuries and certificate of deposit, held-to-maturity	33.9	35.0
Recurring [Member] \| Policy loans [Member] \| Fair Value [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	32.7	18.8
Recurring [Member] \| Policy loans [Member] \| Carrying Amount [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	32.7	18.8
Recurring [Member] \| Level 1 [Member]
Assets
Cash and cash equivalents	1,103.7	1,468.4
Fixed maturity securities, available-for-sale:
Total financial assets	3,175.1	2,545.6
Liabilities
Total debt		524.0
Derivatives, Liabilities
Total financial liabilities		524.0
Recurring [Member] \| Level 1 [Member] \| U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	2,023.1	930.4
Recurring [Member] \| Level 1 [Member] \| Equity securities [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	48.3	146.8
Recurring [Member] \| Level 2 [Member]
Assets
Cash and cash equivalents		2.3
Fixed maturity securities, available-for-sale:
Total financial assets	14,637.5	15,482.8
Liabilities
Total debt	4,138.3	1,804.8
Derivatives, Liabilities
Total financial liabilities	4,148.9	1,815.7
Recurring [Member] \| Level 2 [Member] \| Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivative investments	0.6	1.2
Derivatives, Liabilities
Derivative investments	10.6	10.0
Recurring [Member] \| Level 2 [Member] \| Commodity swap and option agreements [Member]
Derivatives, Assets
Derivative investments	1.8	2.0
Recurring [Member] \| Level 2 [Member] \| Call options [Member]
Derivatives, Assets
Derivative investments	156.4	200.7
Recurring [Member] \| Level 2 [Member] \| Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale	263.8	248.1
Recurring [Member] \| Level 2 [Member] \| Future contracts [Member]
Derivatives, Liabilities
Derivative investments		0.9
Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,285.4	1,012.0
Recurring [Member] \| Level 2 [Member] \| Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	557.5	548.8
Recurring [Member] \| Level 2 [Member] \| Corporates [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	9,618.1	10,873.7
Recurring [Member] \| Level 2 [Member] \| Hybrids [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	436.5	519.4
Recurring [Member] \| Level 2 [Member] \| Municipals [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	1,174.3	1,224.0
Recurring [Member] \| Level 2 [Member] \| Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	140.0	155.0
Recurring [Member] \| Level 2 [Member] \| Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	969.2	660.6
Recurring [Member] \| Level 2 [Member] \| Fixed maturities securities [Member]
Fixed maturity securities, available-for-sale:
U.S. Treasuries and certificate of deposit, held-to-maturity	33.9	35.0
Recurring [Member] \| Level 3 [Member]
Assets
Contingent purchase price reduction receivable	41.0	41.0
Fixed maturity securities, available-for-sale:
Asset-backed loans	204.8	180.1
Total financial assets	551.0	404.9
Derivatives, Liabilities
Equity conversion feature of preferred stock	163.1	232.0
Redeemable preferred stock, excluding equity conversion feature	377.8	368.9
Investment contracts, included in contractholder funds	12,442.7	12,271.9
Total financial liabilities	14,500.6	14,423.6
Recurring [Member] \| Level 3 [Member] \| FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative investments	1,517.0	1,550.8
Recurring [Member] \| Level 3 [Member] \| Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	5.3	15.9
Recurring [Member] \| Level 3 [Member] \| Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	6.1	5.0
Recurring [Member] \| Level 3 [Member] \| Corporates [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	256.1	135.3
Recurring [Member] \| Level 3 [Member] \| Hybrids [Member]
Fixed maturity securities, available-for-sale:
Fixed maturity securities, available-for-sale	5.0	8.8
Recurring [Member] \| Level 3 [Member] \| Policy loans [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	$ 32.7	$ 18.8