Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income for the period	$ 13,960	$ 119,550	$ 105,985	$ 220,760
Other comprehensive income, net of tax:
Unrealized holding gains (losses) on investment securities	(7,294)	8,551	(6,808)	82,458
Reclassification of HTM securities to AFS Securities	0	0	10,938	0
Reclassification to earnings for realized net fixed income securities losses (gains)	85,664	(3,104)	85,812	(27,944)
Reclassification to earnings for net credit-related impairment losses on investment securities	0	0	0	17
Accretion of securities with noncredit-related impairment losses not expected to be sold	0	273	0	559
Net unrealized holding gains (losses) on derivative instruments	(219)	1,199	2,334	1,519
Net unrealized gains (losses) on other noninterest-bearing investments	2,339	2,054	1,975	(787)
Reclassification adjustment for increase in interest income recognized in earnings on derivatives instruments	(753)	(348)	(1,382)	(558)
Other comprehensive income (loss)	79,737	8,625	92,869	55,264
Comprehensive income applicable to controlling interest	$ 93,697	$ 128,175	$ 198,854	$ 276,024