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v3.19.1

Note Debt Securities Available for Sale (Amortized cost, gross unrealized gains and losses, approximate fair value, weighted average yield and contractual maturities of debt securities AFS) (Detail) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Securities, Available-for-sale |  |  |  |
Debt securities available-for-sale, at fair value | $ 13,542,695 |  | $ 13,300,184 |
Gross Unrealized Gains | 59,078 |  | 30,929 |
Gross Unrealized Losses | 127,744 |  | 209,307 |
Amortized Cost | 13,611,361 | [1] | 13,478,562 | [2]
Amortized cost |  |  |  |
Amortized Cost | 13,611,361 |  | 13,478,562 |
Gross unrealized gains |  |  |  |
Gross unrealized gains | 59,078 |  | 30,929 |
Gross unrealized loss |  |  |  |
Gross unrealized losses | 127,744 |  | 209,307 |
Fair Value |  |  |  |
Fair Value | $ 13,542,695 |  | $ 13,300,184 |
Weighted average yield |  |  |  |
Weighted Average Yield | 2.29% |  | 2.25% |
US Treasury Securities |  |  |  |
Amortized cost |  |  |  |
Amortized cost - Within 1 year | $ 3,453,820 |  | $ 3,565,571 |
Amortized cost - After 1 to 5 years | 4,559,672 |  | 4,483,741 |
Amortized cost - After 5 to 10 years | 2,988 |  | 245,891 |
Amortized Cost | 8,016,480 |  | 8,295,203 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - Within 1 year | 677 |  | 108 |
Gross unrealized gain - After 1 to 5 years | 34,676 |  | 13,647 |
Gross unrealized gain - After 5 to 10 years | 138 |  | 3,770 |
Gross unrealized gains | 35,491 |  | 17,525 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - Within 1 year | 4,064 |  | 5,319 |
Gross unrealized losses - After 1 to 5 years | 16,420 |  | 35,213 |
Gross unrealized losses - After 5 to 10 years | 0 |  | 0 |
Gross unrealized losses | 20,484 |  | 40,532 |
Fair Value |  |  |  |
Fair value - Within 1 year | 3,450,433 |  | 3,560,360 |
Fair value - After 1 to 5 years | 4,577,928 |  | 4,462,175 |
Fair value - After 5 to 10 years | 3,126 |  | 249,661 |
Fair Value | $ 8,031,487 |  | $ 8,272,196 |
Weighted average yield |  |  |  |
Weighted average yield - Within 1 year | 2.06% |  | 2.10% |
Weighted average yield - After 1 to 5 years | 2.31% |  | 2.25% |
Weighted average yield - After 5 to 10 years | 3.06% |  | 2.84% |
Weighted Average Yield | 2.20% |  | 2.21% |
Obligations of U.S. Government sponsored entities |  |  |  |
Amortized cost |  |  |  |
Amortized cost - Within 1 year | $ 181,084 |  | $ 212,951 |
Amortized cost - After 1 to 5 years | 85,737 |  | 123,857 |
Amortized Cost | 266,821 |  | 336,808 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - Within 1 year | 3 |  | 0 |
Gross unrealized gain - After 1 to 5 years | 7 |  | 1 |
Gross unrealized gains | 10 |  | 1 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - Within 1 year | 980 |  | 1,406 |
Gross unrealized losses - After 1 to 5 years | 1,180 |  | 2,094 |
Gross unrealized losses | 2,160 |  | 3,500 |
Fair Value |  |  |  |
Fair value - Within 1 year | 180,107 |  | 211,545 |
Fair value - After 1 to 5 years | 84,564 |  | 121,764 |
Fair Value | $ 264,671 |  | $ 333,309 |
Weighted average yield |  |  |  |
Weighted average yield - Within 1 year | 1.45% |  | 1.44% |
Weighted average yield - After 1 to 5 years | 1.49% |  | 1.51% |
Weighted Average Yield | 1.46% |  | 1.47% |
Obligations of Puerto Rico, States and political subdivisions |  |  |  |
Amortized cost |  |  |  |
Amortized cost - Within 1 year | $ 6,975 |  |  |
Amortized cost - After 1 to 5 years |  |  | $ 6,926 |
Amortized Cost | 6,975 |  | 6,926 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - Within 1 year | 0 |  |  |
Gross unrealized gain - After 1 to 5 years |  |  | 0 |
Gross unrealized gains | 0 |  | 0 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - Within 1 year | 166 |  |  |
Gross unrealized losses - After 1 to 5 years |  |  | 184 |
Gross unrealized losses | 166 |  | 184 |
Fair Value |  |  |  |
Fair value - Within 1 year | 6,809 |  |  |
Fair value - After 1 to 5 years |  |  | 6,742 |
Fair Value | $ 6,809 |  | $ 6,742 |
Weighted average yield |  |  |  |
Weighted average yield - Within 1 year | 0.00% |  |  |
Weighted average yield - After 1 to 5 years |  |  | 0.70% |
Weighted Average Yield | 0.00% |  | 0.70% |
Collateralized Mortgage Obligations - Federal agencies |  |  |  |
Amortized cost |  |  |  |
Amortized cost - After 1 to 5 years | $ 1,082 |  | $ 749 |
Amortized cost - After 5 to 10 years | 107,033 |  | 115,744 |
Amortized cost - After 10 years | 612,396 |  | 638,995 |
Amortized Cost | 720,511 |  | 755,488 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - After 1 to 5 years | 0 |  | 0 |
Gross unrealized gain - After 5 to 10 years | 0 |  | 1 |
Gross unrealized gain - After 10 years | 2,260 |  | 1,584 |
Gross unrealized gains | 2,260 |  | 1,585 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - After 1 to 5 years | 8 |  | 7 |
Gross unrealized losses - After 5 to 10 years | 3,502 |  | 4,715 |
Gross unrealized losses - After 10 years | 17,495 |  | 23,680 |
Gross unrealized losses | 21,005 |  | 28,402 |
Fair Value |  |  |  |
Fair value - After 1 to 5 years | 1,074 |  | 742 |
Fair value - After 5 to 10 years | 103,531 |  | 111,030 |
Fair value - After 10 years | 597,161 |  | 616,899 |
Fair Value | $ 701,766 |  | $ 728,671 |
Weighted average yield |  |  |  |
Weighted average yield - After 1 to 5 years | 2.01% |  | 1.92% |
Weighted average yield - After 5 to 10 years | 1.68% |  | 1.71% |
Weighted average yield - After 10 years | 2.10% |  | 2.10% |
Weighted Average Yield | 2.04% |  | 2.04% |
Mortgage Backed Securities |  |  |  |
Amortized cost |  |  |  |
Amortized cost - Within 1 year | $ 135 |  | $ 431 |
Amortized cost - After 1 to 5 years | 14,133 |  | 6,762 |
Amortized cost - After 5 to 10 years | 347,822 |  | 365,727 |
Amortized cost - After 10 years | 4,238,051 |  | 3,710,731 |
Amortized Cost | 4,600,141 |  | 4,083,651 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - Within 1 year | 1 |  | 4 |
Gross unrealized gain - After 1 to 5 years | 206 |  | 43 |
Gross unrealized gain - After 5 to 10 years | 1,156 |  | 1,090 |
Gross unrealized gain - After 10 years | 19,949 |  | 10,679 |
Gross unrealized gains | 21,312 |  | 11,816 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - Within 1 year | 0 |  | 0 |
Gross unrealized losses - After 1 to 5 years | 1 |  | 1 |
Gross unrealized losses - After 5 to 10 years | 5,621 |  | 8,499 |
Gross unrealized losses - After 10 years | 78,307 |  | 128,189 |
Gross unrealized losses | 83,929 |  | 136,689 |
Fair Value |  |  |  |
Fair value - Within 1 year | 136 |  | 435 |
Fair value - After 1 to 5 years | 14,338 |  | 6,804 |
Fair value - After 5 to 10 years | 343,357 |  | 358,318 |
Fair value - After 10 years | 4,179,693 |  | 3,593,221 |
Fair Value | $ 4,537,524 |  | $ 3,958,778 |
Weighted average yield |  |  |  |
Weighted average yield - Within 1 year | 4.15% |  | 4.30% |
Weighted average yield - After 1 to 5 years | 3.14% |  | 2.74% |
Weighted average yield - After 5 to 10 years | 2.15% |  | 2.19% |
Weighted average yield - After 10 years | 2.55% |  | 2.45% |
Weighted Average Yield | 2.52% |  | 2.43% |
Other |  |  |  |
Amortized cost |  |  |  |
Amortized cost - After 5 to 10 years | $ 433 |  | $ 486 |
Amortized Cost | 433 |  | 486 |
Gross unrealized gains |  |  |  |
Gross unrealized gain - After 5 to 10 years | 5 |  | 2 |
Gross unrealized gains | 5 |  | 2 |
Gross unrealized loss |  |  |  |
Gross unrealized losses - After 5 to 10 years | 0 |  | 0 |
Gross unrealized losses | 0 |  | 0 |
Fair Value |  |  |  |
Fair value - After 5 to 10 years | 438 |  | 488 |
Fair Value | $ 438 |  | $ 488 |
Weighted average yield |  |  |  |
Weighted average yield - After 5 to 10 years | 3.62% |  | 3.62% |
Weighted Average Yield | 3.62% |  | 3.62% |
[1] | Includes $10 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $8.9 billion serve as collateral for public funds.
[2] | Includes $8.9 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $7.9 billion serve as collateral for public funds.

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