Percentage of voting equity interests to be acquired at the acquisition date in the proposed business combination.

No definition available.

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- Definition

Maximum percentage of earnings distributable under a proposed acquisition plan.

+ References

No definition available.

+ Details

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- Definition

Proposed change in basis points increase (decrease) in the stated rate on a preferred stock.

+ References

No definition available.

+ Details

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- Definition

Number of shares of the combined company that the merging company's shareholders will receive for every share they currently hold upon closing of the amalgamation.

+ References

No definition available.

+ Details

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- Definition

Special dividend per share proposed to be paid by the entity to its common stockholders as a result of a proposed business combination.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Fee payable by the company in the event a proposed business combination is terminated.

+ References

No definition available.

+ Details

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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

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
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Period Type:	instant

- Details

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- Details

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- Details

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- Details

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Organization Organization (Details) $ / shares in Units, $ in Millions						3 Months Ended
	Jul. 20, 2015 $ / shares	Jul. 16, 2015 $ / shares	Jul. 07, 2015 $ / shares	May. 03, 2015 USD ($) $ / shares	Jan. 25, 2015 USD ($)	Jun. 30, 2015 shares	May. 12, 2015 $ / shares	Apr. 14, 2015 $ / shares
Business Acquisition [Line Items]
Termination Fee \| $				$ 280	$ 250
PartnerRe Ltd. [Member]
Business Acquisition [Line Items]
Share Exchange Ratio Upon Amalgamation \| shares						2.18
Special Dividend Per Share				$ 11.50
Axis Capital Holdings Ltd [Member]
Business Acquisition [Line Items]
Share Exchange Ratio Upon Amalgamation \| shares						1.00
EXOR S.p.A. [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price							$ 137.50	$ 130
Business acquisition percentage of voting interests proposed to be acquired								100.00%
Subsequent Event [Member] \| PartnerRe Ltd. [Member]
Business Acquisition [Line Items]
Special Dividend Per Share		$ 17.50
Subsequent Event [Member] \| EXOR S.p.A. [Member]
Business Acquisition [Line Items]
Special Dividend Per Share	$ 3.00
Preferred stock interest rate change			100
Maximum earnings distributable			67.00%