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Regulatory and Agency Capital Requirements (Details) (USD $)
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12 Months Ended | 3 Months Ended | 12 Months Ended | ||||||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2011
Trust Preferred Securities [Member]
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Dec. 31, 2011
Trust Preferred Securities [Member]
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Dec. 31, 2011
Series I - 5.80% Fixed-to-Floating Class A Preferred Stock [Member]
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Dec. 31, 2011
Wells Fargo & Company [Member]
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Dec. 31, 2010
Wells Fargo & Company [Member]
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Dec. 31, 2011
Wells Fargo Bank, NA [Member]
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Dec. 31, 2010
Wells Fargo Bank, NA [Member]
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| Regulatory And Agency Capital Requirements [Abstract] | |||||||||
| Tier 1 capital, amounts | $ 114,000,000,000 | $ 109,400,000,000 | $ 92,600,000,000 | $ 90,200,000,000 | |||||
| Total capital, amounts | 148,500,000,000 | 147,100,000,000 | 117,900,000,000 | 117,100,000,000 | |||||
| Risk Weighted Assets | 1,005,600,000,000 | 980,000,000,000 | 923,200,000,000 | 895,200,000,000 | |||||
| Adjusted Average Assets | 1,262,600,000,000 | 1,189,500,000,000 | 1,115,400,000,000 | 1,057,700,000,000 | |||||
| Tier 1 capital ratio | 11.33% | 11.16% | 10.03% | 10.07% | |||||
| Total capital ratio | 14.76% | 15.01% | 12.77% | 13.09% | |||||
| Tier 1 leverage capital ratio | 9.03% | 9.19% | 8.30% | 8.52% | |||||
| Tier 1 capital ratio required to be well capitalized | 6.00% | 6.00% | |||||||
| Total capital ratio required to be well capitalized | 10.00% | 10.00% | |||||||
| Tier 1 leverage capital ratio required to be well capitalized | 5.00% | 5.00% | |||||||
| Tier 1 capital ratio required for capital adequacy purposes | 4.00% | 4.00% | |||||||
| Total capital ratio required for capital adequacy purposes | 8.00% | 8.00% | |||||||
| Tier 1 leverage capital ratio required for capital adequacy purposes | 4.00% | 4.00% | |||||||
| Regulatory and Agency Capital Requirements (Textual) [Abstract] | |||||||||
| Trust preferred and perpetual preferred purchase securities included in Tier 1 capital | 7,500,000,000 | ||||||||
| Minimum leverage ratio for banking organizations | 3.00% | ||||||||
| Trust preferred securities redeemed | 5,800,000,000 | 9,200,000,000 | |||||||
| Preferred stock, issued | $ 2,501,000,000 | $ 2,501,000,000 | |||||||
| X | ||||||||||
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- Definition
The amount of total capital as defined in the regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total Capital divided by risk weighted assets as defined in the regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tier 1 Leverage Capital divided by average assets as defined in the regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tier 1 Risk Based Capital as defined in the regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tier 1 capital divided by risk weighted assets as defined by regulations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Average assets used in calculation of Tier 1 Leverage Capital to average assets as defined in the regulations. No definition available.
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| X | ||||||||||
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- Definition
Minimum leverage ratio for banking organizations. No definition available.
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| X | ||||||||||
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- Definition
Preferred stock amount. No definition available.
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- Details
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- Definition
Risk-weighted assets used in calculation of Tier 1 Risk Based Capital to risk-weighted assets as defined in the regulations. No definition available.
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- Definition
Trust Preferred and perpetual preferred purchase securities included in Tier 1 capital. No definition available.
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- Definition
Value of trust preferred securities redeemed during period. No definition available.
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