Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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.

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The value of the collateral (typically cash) that the entity receives in a financing transaction in exchange for securities lent. This item represents a liability in the financial statements of the lender of the securities.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Other Liabilities, Consolidated Investment Entities

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Business, Basis of Presentation and Significant Accounting Policies - Future Adoption of Accounting Pronouncements (Details) - USD ($) $ in Millions	Jan. 01, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
New Accounting Pronouncement, Early Adoption [Line Items]
Assets		$ 218,249.6	$ 226,930.7
Limited partnerships/corporations		510.6	363.2
Cash and cash equivalents		2,512.7	2,530.9	$ 2,840.8	$ 1,786.8
Corporate loans, at fair value using the fair value option		6,882.5	6,793.1
Other assets		940.4	990.6
Liabilities		201,973.8	208,369.2
Collateralized loan obligations notes, at fair value using the fair value option		6,956.2	6,838.1
Other liabilities		1,951.6	1,357.8
Noncontrolling interest		2,840.0	2,415.3
Appropriated retained earnings (deficit)		$ 16,275.8	$ 18,561.5	$ 15,557.0	$ 16,106.2
Accounting Standards Update 2015-02 \| Subsequent Event
New Accounting Pronouncement, Early Adoption [Line Items]
Assets	$ 7,500.0
Limited partnerships/corporations	2,500.0
Cash and cash equivalents	300.0
Corporate loans, at fair value using the fair value option	4,600.0
Other assets	100.0
Liabilities	5,900.0
Collateralized loan obligations notes, at fair value using the fair value option	4,600.0
Other liabilities	1,300.0
Noncontrolling interest	1,600.0
Accounting Standards Update 2014-13 \| Subsequent Event
New Accounting Pronouncement, Early Adoption [Line Items]
Appropriated retained earnings (deficit)	17.8
Effect of early adoption of new accounting pronouncement \| Accounting Standards Update 2014-13 \| Subsequent Event
New Accounting Pronouncement, Early Adoption [Line Items]
Collateralized loan obligations notes, at fair value using the fair value option	17.8
Effect of early adoption of new accounting pronouncement \| Long-term debt \| Subsequent Event
New Accounting Pronouncement, Early Adoption [Line Items]
Reclassification of debt issuance costs	26.1
Effect of early adoption of new accounting pronouncement \| Other assets \| Subsequent Event
New Accounting Pronouncement, Early Adoption [Line Items]
Reclassification of debt issuance costs	$ (26.1)