Loans Loans - Contractual Maturity of Loans Outstanding by Repricing Characteristic (Details) $ in Millions	Dec. 31, 2018 USD ($)
Receivables [Abstract]
Receivables at predetermined interest rates due after one but within five years	$ 1,860
Receivables at floating or adjustable rates after one but within five years	28,884
Total after one but within five years	30,744
Receivables at predetermined interest rates after five years	4,772
Receivables at floating or adjustable rates after five years	13,216
Total after five years	$ 17,988

Loans Receivable with Fixed Rates of Interest, due after Five Years

No definition available.

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Loans Receivable with Fixed Rates of Interest, due after One but within Five Years

No definition available.

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Loans Receivable with Variable Rates of Interest, due after Five Years

No definition available.

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Loans Receivable with Variable Rates of Interest, due after One but within Five Years

No definition available.

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Loans and Leases Receivable, Net of Deferred Income, Due after One but within Five Years

No definition available.

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Loans and Leases Receivable, Net of Deferred Income, Due after Year Five

No definition available.

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No definition available.

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