Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 135,232	$ 115,595
Other comprehensive income (loss):
Change in unrealized foreign exchange gains (losses)	15,583	10,860
Unrealized holding gains (losses) on investment securities arising during the period, net of taxes	53,106	(6,217)
Reclassification adjustment for net investment losses included in net income, net of taxes	(31,082)	(18,790)
Change in unrecognized pension obligation, net of taxes	824	704
Other comprehensive income (loss)	38,431	(13,443)
Comprehensive income	173,663	102,152
Comprehensive income to the noncontrolling interests	63	51
Comprehensive income to common stockholders	$ 173,726	$ 102,203

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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