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Interest Income and Interest Expense (Tables)
12 Months Ended
Dec. 31, 2017
Interest Income and Interest Expense Disclosure [Abstract]  
Interest Income and Interest Expense Disclosure
The following table shows the components of interest income and interest expense (dollars in millions):
 
 
Year Ended December 31,
 
 
2017
 
2016
 
2015
Interest income:
 
 
 
 
 
 
Cash and equivalents
 
$
9

 
$
7

 
$
3

Cash required to be segregated under federal or other regulations
 
12

 
6

 
1

Available-for-sale securities
 
390

 
266

 
244

Held-to-maturity securities
 
572

 
425

 
346

Margin receivables
 
320

 
249

 
276

Loans
 
157

 
191

 
230

Broker-related receivables and other
 
3

 
1

 
3

Subtotal interest income
 
1,463

 
1,145

 
1,103

Other interest revenue(1)
 
108

 
88

 
112

Total interest income(2)
 
1,571

 
1,233

 
1,215

Interest expense:
 
 
 
 
 
 
Deposits
 
(4
)
 
(3
)
 
(4
)
Customer payables
 
(5
)
 
(5
)
 
(5
)
Other borrowings
 
(22
)
 
(18
)
 
(117
)
Corporate debt
 
(48
)
 
(54
)
 
(59
)
Subtotal interest expense
 
(79
)
 
(80
)
 
(185
)
Other interest expense(3)
 
(7
)
 
(5
)
 
(9
)
Total interest expense(4)
 
(86
)
 
(85
)
 
(194
)
Net interest income
 
$
1,485

 
$
1,148

 
$
1,021


(1)
Represents interest income on securities loaned.
(2)
Interest income reflects $(59) million, $(35) million, and $(42) million recognized on hedges that qualify for hedge accounting for the years ended December 31, 2017, 2016, and 2015, respectively.
(3)
Represents interest expense on securities borrowed.
(4)
Interest expense reflects $(74) million recognized on hedges that qualify for hedge accounting for the year ended December 31, 2015.