XML 66 R52.htm IDEA: XBRL DOCUMENT v3.3.1.900
Summary of Portfolio of Securities Held to Maturity (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 5,978,107 [1] $ 6,931,498 [2]
Carrying Amount 5,969,390 [1] 6,922,667 [2]
Gross Unrealized Gain 168,470 [1] 212,968 [2]
Gross Unrealized Loss 29,331 [1] 49,664 [2]
Fair Value 6,108,529 [1] 7,085,971 [2]
Mortgage-Related Securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 3,594,861 4,079,034
Carrying Amount 3,594,861 4,079,034
Gross Unrealized Gain 130,063 171,489
Gross Unrealized Loss 4,779 4,549
Fair Value 3,720,145 4,245,974
Mortgage-Related Securities | GSE certificates    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 2,269,828 2,468,791
Carrying Amount 2,269,828 2,468,791
Gross Unrealized Gain 76,827 106,414
Gross Unrealized Loss 4,722 3,838
Fair Value 2,341,933 2,571,367
Mortgage-Related Securities | GSE CMOs    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 1,325,033 [3] 1,610,243
Carrying Amount 1,325,033 [3] 1,610,243
Gross Unrealized Gain 53,236 [3] 65,075
Gross Unrealized Loss 57 [3] 711
Fair Value 1,378,212 [3] 1,674,607
Other Securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 2,383,246 2,852,464
Carrying Amount 2,374,529 2,843,633
Gross Unrealized Gain 38,407 41,479
Gross Unrealized Loss 24,552 45,115
Fair Value 2,388,384 2,839,997
Other Securities | GSE debentures    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 2,159,856 2,635,989
Carrying Amount 2,159,856 2,635,989
Gross Unrealized Gain 23,892 24,173
Gross Unrealized Loss 7,568 32,920
Fair Value 2,176,180 2,627,242
Other Securities | Corporate bonds    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 73,756 73,317
Carrying Amount 73,756 73,317
Gross Unrealized Gain 10,503 12,113
Fair Value 84,259 85,430
Other Securities | Municipal bonds    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 75,317 58,682
Carrying Amount 75,317 58,682
Gross Unrealized Gain 262  
Gross Unrealized Loss 1,084 1,027
Fair Value 74,495 57,655
Other Securities | Capital trust notes    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 74,317 84,476
Carrying Amount 65,600 75,645
Gross Unrealized Gain 3,750 5,193
Gross Unrealized Loss 15,900 11,168
Fair Value $ 53,450 $ 69,670
[1] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At December 31, 2015, the non-credit portion of OTTI recorded in AOCL was $8.7 million (before taxes).
[2] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At December 31, 2014, the non-credit portion of OTTI recorded in AOCL was $8.8 million (before taxes).
[3] Collateralized mortgage obligations.