Deposits (Details - Time Deposits over $100,000) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Deposits [Abstract]
Contractual Maturities of Time Deposits, $100,000 or More, Description	100000
Contractual Maturities of Time Deposits, $250,000 or More, Description	250000
Contractual Maturities, Time Deposits, $100,000 or More [Abstract]
Three months or less	$ 0	$ 1
Three through six months	1	1
Six through twelve months	2	2
Over twelve months	1	2
Total certificates of deposit	4	6
Contractual Maturities Time Deposits 250000 Or More [Abstract]
Over twelve months	1	1
Total certificates of deposit	$ 1	$ 1

-- None. No documentation exists for this element. --

No definition available.

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- Definition

The amount of contractual maturities of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $250,000 or more, for the period more than 12 months after the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Description of contractual maturities of domestic and foreign time deposits (which include certificates of deposits, individual retirement accounts and open accounts), in denominations of $250,000 or more, including methodology and assumptions.

+ References

No definition available.

+ Details

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- Definition

The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $250,000 or more.

+ References

No definition available.

+ Details

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- Definition

Description of contractual maturities of domestic and foreign time deposits (which include certificates of deposits, individual retirement accounts and open accounts), in denominations of $100,000 or more, including methodology and assumptions.

+ References

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- References

No definition available.

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- Definition

The amount of contractual maturities of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, after twelve months from the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=50488274&loc=d3e64164-112818

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Industry Guide
-Number 3
-Section V
-Paragraph D

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- Definition

The amount of contractual maturities of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, for the period from six months through twelve months after the balance sheet date.

+ References

+ Details

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- Definition

The amount of contractual maturities of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, for three months or less from the balance sheet date.

+ References

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The amount of contractual maturities of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, for the period from three months through six months after the balance sheet date.

+ References

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No definition available.

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- Definition

The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more.

+ References

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