General Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Dec. 31, 2011 Deferred Policy Acquistion Costs	Dec. 31, 2011 Accounts payable and accrued liabilities (deferred income taxes)	Dec. 31, 2011 Retained Earnings	Jun. 30, 2011 Policy acquisition costs net	Jun. 30, 2011 Policy acquisition costs net	Jun. 30, 2011 Other operating expense	Jun. 30, 2011 Other operating expense
New Accounting Pronouncements And Change In Accounting Principals [Line Items]
As originally reported	$ 217,608	$ 675,174	$ 2,447,850	$ 84,483	$ 167,861	$ 63,748	$ 128,060
Change	(27,975)	(9,943)	(18,032)	(18,642)	(32,177)	18,642	32,177
As adjusted	$ 189,633	$ 665,231	$ 2,429,818	$ 65,841	$ 135,684	$ 82,390	$ 160,237