XML 152 R112.htm IDEA: XBRL DOCUMENT v3.8.0.1
INVESTMENTS - Fair Value of AFS Debt Securities by Contractual Maturity Date (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Available-for-sale Securities, Debt Maturities    
Total amortized cost $ 292,220 $ 299,892
Total fair value 290,725 299,033
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities    
Due within 1 year, amortized cost 45 132
After 1 but within 5 years, amortized cost 1,306 736
After 5 but within 10 years, amortized cost 1,376 2,279
After 10 years, amortized cost 42,504 39,770
Total amortized cost 45,231 42,917
Fair value, due within 1 year 45 132
Fair value, after 1 but within 5 years 1,304 738
Fair value, after 5 but within 10 years 1,369 2,265
Fair value, after 10 years 42,239 39,538
Total fair value 44,957 42,673
U.S. Treasury and federal agency securities    
Available-for-sale Securities, Debt Maturities    
Due within 1 year, amortized cost 4,913 4,945
After 1 but within 5 years, amortized cost 111,236 101,369
After 5 but within 10 years, amortized cost 3,008 17,153
After 10 years, amortized cost 0 91
Total amortized cost 119,157 123,558
Fair value, due within 1 year 4,907 4,945
Fair value, after 1 but within 5 years 110,238 101,323
Fair value, after 5 but within 10 years 3,001 17,314
Fair value, after 10 years 0 89
Total fair value 118,146 123,671
State and municipal securities    
Available-for-sale Securities, Debt Maturities    
Due within 1 year, amortized cost 1,792 2,093
After 1 but within 5 years, amortized cost 2,579 2,668
After 5 but within 10 years, amortized cost 514 335
After 10 years, amortized cost 3,985 5,701
Total amortized cost 8,870 10,797
Fair value, due within 1 year 1,792 2,092
Fair value, after 1 but within 5 years 2,576 2,662
Fair value, after 5 but within 10 years 528 334
Fair value, after 10 years 3,869 5,032
Total fair value 8,765 10,120
Foreign government    
Available-for-sale Securities, Debt Maturities    
Due within 1 year, amortized cost 32,130 32,540
After 1 but within 5 years, amortized cost 53,034 51,008
After 5 but within 10 years, amortized cost 12,949 12,388
After 10 years, amortized cost 2,502 2,176
Total amortized cost 100,615 98,112
Fair value, due within 1 year 32,100 32,547
Fair value, after 1 but within 5 years 53,165 50,881
Fair value, after 5 but within 10 years 12,680 12,440
Fair value, after 10 years 2,588 2,280
Total fair value 100,533 98,148
All other    
Available-for-sale Securities, Debt Maturities    
Due within 1 year, amortized cost 3,998 2,629
After 1 but within 5 years, amortized cost 9,047 12,339
After 5 but within 10 years, amortized cost 3,415 6,566
After 10 years, amortized cost 1,887 2,974
Total amortized cost 18,347 24,508
Fair value, due within 1 year 3,991 2,628
Fair value, after 1 but within 5 years 9,027 12,334
Fair value, after 5 but within 10 years 3,431 6,528
Fair value, after 10 years 1,875 2,931
Total fair value $ 18,324 $ 24,421