Indemnity Capital Stock (Details 2) - Indemnity - Class A - Stock repurchase program - USD ($) $ in Millions	Jun. 30, 2015	Oct. 31, 2011
Stock repurchases
Amount of authorized stock repurchases approved for continuation under the current program		$ 150
Approximate amount of repurchase authority remaining under the current stock repurchase program	$ 18

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.

No definition available.

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