Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

No definition available.

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- Definition

Line of Credit Facility, Additional Borrowing Amount

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Ratio of Third-Party Borrowings to Trailing Twelve Months Adjusted EBITDA

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt 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.

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Balance Type:	debit
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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Borrowings and Debt - Long Term Debt Excluding Consolidated Funds (Details) - USD ($)		3 Months Ended
	Aug. 20, 2019	Sep. 30, 2019	Aug. 19, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Face Amount		$ 450,000,000
Ratio of third-party borrowings to trailing twelve months adjusted EBITDA	3.0
Interest coverage ratio	4.0
Fair Value, Inputs, Level 2
Debt Instrument [Line Items]
Carrying value		603,600,000		$ 393,300,000
Fair Value		620,200,000		368,300,000
Fair Value, Inputs, Level 2 \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Carrying value		175,000,000.0		0
Fair Value		175,000,000.0		0
Face Amount	$ 450,000,000		$ 350,000,000
Citibank \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	450,000,000
Line of credit facility, additional amount borrowed	150,000,000
Line of credit facility, initial drawdown	210,000,000
Repayment of credit facility	$ 210,000,000	35,000,000
Fed Funds Effective Rate \| Citibank \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Basis spread on variable interest rate	0.50%
London Interbank Offered Rate (LIBOR) \| Revolving credit facility
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.50%
London Interbank Offered Rate (LIBOR) \| Citibank \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.00%
Line of credit, commitment fee percentage	0.20%
Minimum \| London Interbank Offered Rate (LIBOR) \| Citibank \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.125%
Line of credit, commitment fee percentage	0.125%
Maximum \| London Interbank Offered Rate (LIBOR) \| Citibank \| Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Basis spread on variable interest rate	2.00%
Line of credit, commitment fee percentage	0.45%
Non-recourse Seed Capital Facility \| Fair Value, Inputs, Level 2 \| Line of Credit
Debt Instrument [Line Items]
Carrying value		35,000,000.0		0
Fair Value		35,000,000.0		0
Senior Notes, 4.80%, due 2026 \| Senior notes
Debt Instrument [Line Items]
Face Amount		$ 275,000,000
Interest rate		4.80%
Senior Notes, 4.80%, due 2026 \| Fair Value, Inputs, Level 2 \| Senior notes
Debt Instrument [Line Items]
Carrying value		$ 272,300,000		272,200,000
Fair Value		285,900,000		266,000,000.0
Senior Notes, 5.125%, due 2031 \| Senior notes
Debt Instrument [Line Items]
Face Amount		$ 125,000,000
Interest rate		5.125%
Senior Notes, 5.125%, due 2031 \| Fair Value, Inputs, Level 2 \| Senior notes
Debt Instrument [Line Items]
Carrying value		$ 121,300,000		121,100,000
Fair Value		$ 124,300,000		$ 102,300,000