Compensation and Benefits - Restricted Share Activity (Details)	6 Months Ended
Jun. 30, 2020 $ / shares shares
Restricted Stock
Restricted Stock Awards and Restricted Stock Units
Beginning balance (in shares)	5,005,422
Granted (in shares)	919,455
Forfeited (in shares)	(40,101)
Vested (in shares)	(588,144)
Ending balance (in shares)	5,296,632
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 35.00
Granted (in dollars per share) \| $ / shares	33.80
Forfeited (in dollars per share) \| $ / shares	30.71
Vested (in dollars per share) \| $ / shares	32.59
Ending balance (in dollars per share) \| $ / shares	$ 35.09
Restricted Stock Awards
Restricted Stock Awards and Restricted Stock Units
Granted (in shares)	916,085
Restricted Stock Units RSUs
Restricted Stock Awards and Restricted Stock Units
Granted (in shares)	3,370
Performance Shares
Restricted Stock Awards and Restricted Stock Units
Beginning balance (in shares)	0
Granted (in shares)	60,000
Forfeited (in shares)	0
Vested (in shares)	0
Ending balance (in shares)	60,000
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 0
Granted (in dollars per share) \| $ / shares	52.45
Forfeited (in dollars per share) \| $ / shares	0
Vested (in dollars per share) \| $ / shares	0
Ending balance (in dollars per share) \| $ / shares	$ 52.45
Performance Shares \| Potential Performance Shares
Restricted Stock Awards and Restricted Stock Units
Ending balance (in shares)	90,000

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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