Loans and Leases - Net Loans (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 18,799	$ 18,199
Allowance for loan losses	(46)	(38)
Loans and leases, net of allowance for loan losses	18,753	18,161
Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	18,771	18,171
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	28	28
U.S. \| Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment funds	11,136	11,388
Commercial and financial	4,671	3,061
Purchased receivables	93	124
Lease financing	337	335
U.S. \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate	28	28
Non-U.S. \| Institutional
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment funds	1,678	2,333
Commercial and financial	278	256
Purchased receivables	0	6
Lease financing	$ 578	$ 668

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Purchased Receivables

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Amount before allowance of commercial leases and leveraged lease transactions where the entity is long-term creditor. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes leases covered under loss sharing agreements.

+ References

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-Name Accounting Standards Codification
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount before allowance of loans issued to financial institutions, including, but not limited to, real estate investment trusts, mortgage companies, and banks. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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