Fair Value (Fair Value Measurements- Recurring Quantitative Information) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012
Equity Method Investments [Member] | Indirect Investments Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	$ 677	[1]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	10,391
Recurring Liabilities - Fair Value	289
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	6,967
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	5,887
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Third Party Pricing Services Available [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	5,136
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Third Party Pricing Services Unavailable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	751
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Constant Prepayment Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.00%	[2]
Range (Maximum % or bps amount)	40.00%	[2]
Weighted Average (% or bps amount)	5.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Constant Default Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	0.00%	[2]
Range (Maximum % or bps amount)	20.00%	[2]
Weighted Average (% or bps amount)	7.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Loss Severity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	10.00%	[2]
Range (Maximum % or bps amount)	92.00%	[2]
Weighted Average (% or bps amount)	50.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Residential mortgage-backed Securities [Member] | Mortgage-backed Securities Non-agency [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted Average (% or bps amount)	5.68%	[2],[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	688
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Third Party Pricing Services Available [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	662
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Third Party Pricing Services Unavailable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	26
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Constant Prepayment Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.00%	[2]
Range (Maximum % or bps amount)	8.00%	[2]
Weighted Average (% or bps amount)	3.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Constant Default Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.00%	[2]
Range (Maximum % or bps amount)	25.00%	[2]
Weighted Average (% or bps amount)	9.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Loss Severity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	10.00%	[2]
Range (Maximum % or bps amount)	100.00%	[2]
Weighted Average (% or bps amount)	71.00%	[2]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Asset backed [Member] | Priced By A Third Party Vendor Using Discounted Cash Flow Pricing Model [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted Average (% or bps amount)	7.09%	[2],[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | State and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	337
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | State and Municipal [Member] | Discounted Cash Flow [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	154
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | State and Municipal [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.25%	[3]
Range (Maximum % or bps amount)	3.10%	[3]
Weighted Average (% or bps amount)	1.83%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | State and Municipal [Member] | Consensus Pricing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	183
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | State and Municipal [Member] | Consensus Pricing [Member] | Credit And Liquidity Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	0.00%	[4]
Range (Maximum % or bps amount)	40.00%	[4]
Weighted Average (% or bps amount)	9.00%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	55
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Available-for-sale Securities [Member] | Other Debt Securities [Member] | Consensus Pricing [Member] | Credit And Liquidity Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	7.00%	[4]
Range (Maximum % or bps amount)	95.00%	[4]
Weighted Average (% or bps amount)	86.00%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	117
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	109
Recurring Liabilities - Fair Value	7
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Residential Mortgage Loans Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	87
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Residential Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Probability Of Funding [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	5.00%
Range (Maximum % or bps amount)	99.00%
Weighted Average (% or bps amount)	69.40%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Residential Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Embedded Servicing Value [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	0.50%
Range (Maximum % or bps amount)	1.20%
Weighted Average (% or bps amount)	0.80%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Commercial Mortgage Loans Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	17
Recurring Liabilities - Fair Value	4
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Commercial Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	0.55%	[3]
Range (Maximum % or bps amount)	2.90%	[3]
Weighted Average (% or bps amount)	0.94%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Commercial Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	0.65%	[3]
Range (Maximum % or bps amount)	2.90%	[3]
Weighted Average (% or bps amount)	1.14%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Commercial Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Embedded Servicing Value [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.30%
Range (Maximum % or bps amount)	2.60%
Weighted Average (% or bps amount)	1.80%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Commercial Mortgage Loans Commitments [Member] | Discounted Cash Flow [Member] | Embedded Servicing Value [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.30%
Range (Maximum % or bps amount)	2.60%
Weighted Average (% or bps amount)	1.90%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Interest Rate Options [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	5
Recurring Liabilities - Fair Value	3
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Interest Rate Options [Member] | Option Model [Member] | Interest Rate Volatility [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	27.00%
Range (Maximum % or bps amount)	36.00%
Weighted Average (% or bps amount)	35.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Interest Rate Contracts [Member] | Interest Rate Options [Member] | Option Model [Member] | Interest Rate Volatility [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	27.00%
Range (Maximum % or bps amount)	37.00%
Weighted Average (% or bps amount)	36.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Black Rock LTIP [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Liabilities - Fair Value	200
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Black Rock LTIP [Member] | Consensus Pricing [Member] | Liquidity Discount [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	22.50%	[4]
Range (Maximum % or bps amount)	22.50%	[4]
Weighted Average (% or bps amount)	22.50%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	8
Recurring Liabilities - Fair Value	82
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Risk Participation Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	8
Recurring Liabilities - Fair Value	7
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Risk Participation Agreements [Member] | Discounted Cash Flow [Member] | Loss Severity [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	28.00%
Range (Maximum % or bps amount)	41.00%
Weighted Average (% or bps amount)	32.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Risk Participation Agreements [Member] | Discounted Cash Flow [Member] | Loss Severity [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	5.00%
Range (Maximum % or bps amount)	41.00%
Weighted Average (% or bps amount)	30.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Risk Participation Agreements [Member] | Discounted Cash Flow [Member] | Probability Of Default [Member] | Financial Derivative Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	4.00%
Range (Maximum % or bps amount)	100.00%
Weighted Average (% or bps amount)	29.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Risk Participation Agreements [Member] | Discounted Cash Flow [Member] | Probability Of Default [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.00%
Range (Maximum % or bps amount)	100.00%
Weighted Average (% or bps amount)	32.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Other Contracts Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Liabilities - Fair Value	75
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Other Contracts Liabilities [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	1.57%	[3]
Range (Maximum % or bps amount)	1.57%	[3]
Weighted Average (% or bps amount)	1.57%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Financial Derivatives [Member] | Total Other Contracts [Member] | Other Contracts Liabilities [Member] | Discounted Cash Flow [Member] | Credit And Liquidity Discount [Member] | Financial Derivative Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	39.00%
Range (Maximum % or bps amount)	99.00%
Weighted Average (% or bps amount)	48.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Trading Securities - Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	41
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Trading Securities - Debt [Member] | Consensus Pricing [Member] | Credit And Liquidity Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	8.00%	[4]
Range (Maximum % or bps amount)	40.00%	[4]
Weighted Average (% or bps amount)	24.00%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Residential Mortgage Servicing Rights MSRs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	581
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Residential Mortgage Servicing Rights MSRs [Member] | Discounted Cash Flow [Member] | Constant Prepayment Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	3.90%
Range (Maximum % or bps amount)	55.90%
Weighted Average (% or bps amount)	21.40%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Residential Mortgage Servicing Rights MSRs [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	9.39%	[3]
Range (Maximum % or bps amount)	19.41%	[3]
Weighted Average (% or bps amount)	11.46%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Assets Held-for-sale [Member] | Commercial Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	837
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Assets Held-for-sale [Member] | Commercial Mortgages [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	4.80%	[3]
Range (Maximum % or bps amount)	30.60%	[3]
Weighted Average (% or bps amount)	9.14%	[3]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Method Investments [Member] | Direct Investments Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	957
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Method Investments [Member] | Direct Investments Equity [Member] | Multiple Of Adjusted Earnings [Member] | Multiple Of Earnings [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum Amount)	4.5
Range (Maximum Amount)	11.0
Weighted Average (Amount)	7.2
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	7
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Loans | Consensus Pricing [Member] | Credit And Liquidity Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	40.00%	[4]
Range (Maximum % or bps amount)	97.00%	[4]
Weighted Average (% or bps amount)	68.00%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	207
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Black Rock Series C Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	200
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Black Rock Series C Preferred Stock [Member] | Consensus Pricing [Member] | Liquidity Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	22.50%	[4]
Range (Maximum % or bps amount)	22.50%	[4]
Weighted Average (% or bps amount)	22.50%	[4]
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	7
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member] | FHLB Interests [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	5
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member] | FHLB Interests [Member] | Discounted Cash Flow [Member] | Constant Prepayment Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	7.80%
Range (Maximum % or bps amount)	7.80%
Weighted Average (% or bps amount)	7.80%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member] | SBA Securitizations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Recurring Assets - Fair Value	$ 2
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member] | SBA Securitizations [Member] | Discounted Cash Flow [Member] | Constant Prepayment Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	13.30%
Range (Maximum % or bps amount)	13.30%
Weighted Average (% or bps amount)	13.30%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Assets [Member] | Other Assets Fair Value [Member] | SBA Securitizations [Member] | Discounted Cash Flow [Member] | Spread Over Benchmark Curve [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Minimum % or bps amount)	6.50%	[3]
Range (Maximum % or bps amount)	6.50%	[3]
Weighted Average (% or bps amount)	6.50%	[3]

[1] The range on these indirect equity investments has not been disclosed due to the diverse nature of the underlying investments.

[2] Level 3 residential mortgage-backed non-agency and asset-backed securities with fair values as of June 30, 2012 totaling $5,136 million and $662 million, respectively, were priced by a third-party vendor using a discounted cash flow pricing model, that incorporates consensus pricing, where available. The significant unobservable inputs for these securities were provided by the third-party vendor and are disclosed in the table. Our procedures to validate the prices provided by the third-party vendor relatedto these securities are discussed further in the Fair Value Measurement section of this Note 9. Certain Level 3 residential mortgage-backed non-agency and asset-backed securities with fair value as of June 30, 2012 of $751 million and $26 million, respectively, were valued using a pricing source, such as, a dealer quote or comparable security price, for which the significant unobservable inputs used to determine the price were not reasonably available.

[3] The assumed yield spread over the benchmark curve for each instrument is generally intended to incorporate non-interest-rate risks such as credit and liquidity risks.

[4] Consensus pricing refers to fair value estimates that are generally internally developed using information such as dealer quotes or other third-party provided valuations or comparable asset prices.