XML 96 R77.htm IDEA: XBRL DOCUMENT v3.10.0.1
Amortized Cost and Fair Value of Investments in Debt Securities by Estimated Average Life (Detail)
$ in Millions
Dec. 31, 2018
USD ($)
Distribution of Maturities: Amortized Cost, 1 Year or Less $ 1,988
Distribution of Maturities: Amortized Cost, 1-5 Years 6,961
Distribution of Maturities: Amortized Cost, 5-10 Years 20,117
Distribution of Maturities: Amortized Cost, After 10 Years 2,844
Distribution of Maturities: Amortized Cost, Total 31,910
Distribution of Maturities: Fair Value, 1 Year or Less 2,035
Distribution of Maturities: Fair Value, 1-5 Years 6,880
Distribution of Maturities: Fair Value, 5-10 Years 19,751
Distribution of Maturities: Fair Value, After 10 Years 2,776
Distribution of Maturities: Fair Value, Total $ 31,442
Available For Sale Securities Debt Maturities, Yield, One Year Or Less 3.05% [1]
Available For Sale Securities Debt Maturities, Yield, After One Through Five Years 2.25% [1]
Available For Sale Securities Debt Maturities, Yield, After Five Through Ten Years 2.98% [1]
Available For Sale Securities Debt Maturities, Yield, After Ten Years 3.11% [1]
Available For Sale Securities Debt Maturities, Yield 2.84% [1]
US Treasury Securities [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less $ 315
Distribution of Maturities: Amortized Cost, 1-5 Years 2,646
Distribution of Maturities: Amortized Cost, 5-10 Years 1,316
Distribution of Maturities: Amortized Cost, After 10 Years 0
Distribution of Maturities: Amortized Cost, Total 4,277
Distribution of Maturities: Fair Value, 1 Year or Less 312
Distribution of Maturities: Fair Value, 1-5 Years 2,603
Distribution of Maturities: Fair Value, 5-10 Years 1,296
Distribution of Maturities: Fair Value, After 10 Years 0
Distribution of Maturities: Fair Value, Total 4,211
US Government Agencies Debt Securities [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 112
Distribution of Maturities: Amortized Cost, 1-5 Years 29
Distribution of Maturities: Amortized Cost, 5-10 Years 8
Distribution of Maturities: Amortized Cost, After 10 Years 72
Distribution of Maturities: Amortized Cost, Total 221
Distribution of Maturities: Fair Value, 1 Year or Less 113
Distribution of Maturities: Fair Value, 1-5 Years 29
Distribution of Maturities: Fair Value, 5-10 Years 8
Distribution of Maturities: Fair Value, After 10 Years 71
Distribution of Maturities: Fair Value, Total 221
US States and Political Subdivisions Debt Securities [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 2
Distribution of Maturities: Amortized Cost, 1-5 Years 81
Distribution of Maturities: Amortized Cost, 5-10 Years 15
Distribution of Maturities: Amortized Cost, After 10 Years 508
Distribution of Maturities: Amortized Cost, Total 606
Distribution of Maturities: Fair Value, 1 Year or Less 2
Distribution of Maturities: Fair Value, 1-5 Years 84
Distribution of Maturities: Fair Value, 5-10 Years 16
Distribution of Maturities: Fair Value, After 10 Years 487
Distribution of Maturities: Fair Value, Total 589
Other Debt Obligations [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 0
Distribution of Maturities: Amortized Cost, 1-5 Years 14
Distribution of Maturities: Amortized Cost, 5-10 Years 0
Distribution of Maturities: Amortized Cost, After 10 Years 0
Distribution of Maturities: Amortized Cost, Total 14
Distribution of Maturities: Fair Value, 1 Year or Less 0
Distribution of Maturities: Fair Value, 1-5 Years 14
Distribution of Maturities: Fair Value, 5-10 Years 0
Distribution of Maturities: Fair Value, After 10 Years 0
Distribution of Maturities: Fair Value, Total 14
Residential Mortgage Backed Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 1,558
Distribution of Maturities: Amortized Cost, 1-5 Years 3,684
Distribution of Maturities: Amortized Cost, 5-10 Years 15,962
Distribution of Maturities: Amortized Cost, After 10 Years 1,957
Distribution of Maturities: Amortized Cost, Total 23,161
Distribution of Maturities: Fair Value, 1 Year or Less 1,607
Distribution of Maturities: Fair Value, 1-5 Years 3,655
Distribution of Maturities: Fair Value, 5-10 Years 15,682
Distribution of Maturities: Fair Value, After 10 Years 1,920
Distribution of Maturities: Fair Value, Total 22,864
Commercial Mortgage Backed Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 1
Distribution of Maturities: Amortized Cost, 1-5 Years 495
Distribution of Maturities: Amortized Cost, 5-10 Years 1,885
Distribution of Maturities: Amortized Cost, After 10 Years 307
Distribution of Maturities: Amortized Cost, Total 2,688
Distribution of Maturities: Fair Value, 1 Year or Less 1
Distribution of Maturities: Fair Value, 1-5 Years 483
Distribution of Maturities: Fair Value, 5-10 Years 1,845
Distribution of Maturities: Fair Value, After 10 Years 298
Distribution of Maturities: Fair Value, Total 2,627
Commercial Mortgage Backed Securities [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]  
Distribution of Maturities: Amortized Cost, 1 Year or Less 0
Distribution of Maturities: Amortized Cost, 1-5 Years 12
Distribution of Maturities: Amortized Cost, 5-10 Years 931
Distribution of Maturities: Amortized Cost, After 10 Years 0
Distribution of Maturities: Amortized Cost, Total 943
Distribution of Maturities: Fair Value, 1 Year or Less 0
Distribution of Maturities: Fair Value, 1-5 Years 12
Distribution of Maturities: Fair Value, 5-10 Years 904
Distribution of Maturities: Fair Value, After 10 Years 0
Distribution of Maturities: Fair Value, Total $ 916
[1] Weighted average yields are based on amortized cost and presented on an FTE basis.