Supplemental Information About The Credit Quality Of Financing Receivables And Allowance For Losses On Financing Receivables (Consumer) (Details) (Consumer Portfolio Segment [Member], USD $)	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number Of Consumer Financing Receivable Customers Across US Including Private Label Credit Card And Sales Finacing		50,000,000
Percentage of customers with no metropolitan statistical area		6.00%
Percentage Of US Consumer Financing Receivables Related To Credit Cards Loans		63.00%
Percentage Of US Consumer Financing Receivables Related To Sales Finance Receivables		37.00%
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	$ 119,625,000,000	$ 119,625,000,000		$ 119,979,000,000
General reserves	3,359,000,000	3,359,000,000		3,945,000,000
Total impaired loans	2,770,000,000	2,770,000,000		2,548,000,000
Allowance for losses (specific reserves)	572,000,000	572,000,000		555,000,000
Past Due Financing Receivables
Over 30 days past due	7.60%			8.10%
Over 90 days past due	4.10%	4.10%		4.40%
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	57,000,000	57,000,000		65,000,000
Nonaccrual Financing Receivables
Nonaccrual loans	5,666,000,000	5,666,000,000		6,135,000,000
Nonearning financing receivables	5,431,000,000	5,431,000,000		5,752,000,000
Allowance for losses as a percent of nonaccrual financing receivables	69.40%	69.40%		73.30%
Allowance for losses as a percent of nonearning financing receivables	72.40%	72.40%		78.20%
Impaired Loans
Allowance for losses (specific reserves)	572,000,000	572,000,000		555,000,000
Average investment in loans		1,726
Interest income recognized		54,000,000	55,000,000	114,000,000
Credit Quality Indicators
Maximum Percentage Of Private Label Consumer Financing Receivables Located In Any Metropolitan Area		6.00%
Loans and leases receivable, Gross	119,625,000,000	119,625,000,000		119,979,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	119,625,000,000	119,625,000,000		119,979,000,000
Consumer - Other
Loans and leases receivable, Gross	119,625,000,000	119,625,000,000		119,979,000,000
Non US residential mortgages [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	40,731,000,000	40,731,000,000		40,011,000,000
Past Due Financing Receivables
Over 30 days past due	13.60%			13.70%
Over 90 days past due	8.80%	8.80%		8.80%
Nonaccrual Financing Receivables
Nonaccrual loans	3,979,000,000	3,979,000,000		3,986,000,000
Nonearning financing receivables	3,804,000,000	3,804,000,000		3,738,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	40,731,000,000	40,731,000,000		40,011,000,000
Percent Of Non US Mortgages With Loan To Value Ratios Greater Than 90 Percent Covered By Third Party Mortgage Insurance	67.00%	67.00%
Installment And Revolving Credit
Loans and leases receivable, Gross	40,731,000,000	40,731,000,000		40,011,000,000
Consumer - Other
Loans and leases receivable, Gross	40,731,000,000	40,731,000,000		40,011,000,000
Non US residential mortgages [Member] | UK [Member]
Credit Quality Indicators
Reindexed Loan To Value Ratios Of Non US Mortgages	86.00%	86.00%
Non US residential mortgages [Member] | France [Member]
Credit Quality Indicators
Reindexed Loan To Value Ratios Of Non US Mortgages	57.00%	57.00%
Non US residential mortgages [Member] | Loan To Value Ratio Less Than 80 Percent [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	23,091,000,000	23,091,000,000		22,403,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	23,091,000,000	23,091,000,000		22,403,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	23,091,000,000	23,091,000,000		22,403,000,000
Consumer - Other
Loans and leases receivable, Gross	23,091,000,000	23,091,000,000		22,403,000,000
Non US residential mortgages [Member] | Loan To Value Ratio From 80 To 90 Percent [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	6,944,000,000	6,944,000,000		7,023,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	6,944,000,000	6,944,000,000		7,023,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	6,944,000,000	6,944,000,000		7,023,000,000
Consumer - Other
Loans and leases receivable, Gross	6,944,000,000	6,944,000,000		7,023,000,000
Non US residential mortgages [Member] | Loan To Value Ratio Greater Than 90 Percent [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	10,696,000,000	10,696,000,000		10,585,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	10,696,000,000	10,696,000,000		10,585,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	10,696,000,000	10,696,000,000		10,585,000,000
Consumer - Other
Loans and leases receivable, Gross	10,696,000,000	10,696,000,000		10,585,000,000
Non US installment and revolving credit [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	21,047,000,000	21,047,000,000		20,132,000,000
Past Due Financing Receivables
Over 30 days past due	4.70%			4.50%
Over 90 days past due	1.30%	1.30%		1.30%
Nonaccrual Financing Receivables
Nonaccrual loans	309,000,000	309,000,000		302,000,000
Nonearning financing receivables	308,000,000	308,000,000		289,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	21,047,000,000	21,047,000,000		20,132,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	21,047,000,000	21,047,000,000		20,132,000,000
Consumer - Other
Loans and leases receivable, Gross	21,047,000,000	21,047,000,000		20,132,000,000
Non US installment and revolving credit [Member] | Score 681 or Higher [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	11,367,000,000	11,367,000,000		10,192,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	11,367,000,000	11,367,000,000		10,192,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	11,367,000,000	11,367,000,000		10,192,000,000
Consumer - Other
Loans and leases receivable, Gross	11,367,000,000	11,367,000,000		10,192,000,000
Non US installment and revolving credit [Member] | Score 615 to 680 [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	5,495,000,000	5,495,000,000		5,749,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	5,495,000,000	5,495,000,000		5,749,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	5,495,000,000	5,495,000,000		5,749,000,000
Consumer - Other
Loans and leases receivable, Gross	5,495,000,000	5,495,000,000		5,749,000,000
Non US installment and revolving credit [Member] | Score 614 or Less [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	4,185,000,000	4,185,000,000		4,191,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	4,185,000,000	4,185,000,000		4,191,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	4,185,000,000	4,185,000,000		4,191,000,000
Consumer - Other
Loans and leases receivable, Gross	4,185,000,000	4,185,000,000		4,191,000,000
US installment and revolving credit [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	42,178,000,000	42,178,000,000		43,974,000,000
Past Due Financing Receivables
Over 30 days past due	4.70%			6.20%
Over 90 days past due	2.00%	2.00%		2.80%
Nonaccrual Financing Receivables
Nonaccrual loans	790,000,000	790,000,000		1,201,000,000
Nonearning financing receivables	790,000,000	790,000,000		1,201,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	42,178,000,000	42,178,000,000		43,974,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	42,178,000,000	42,178,000,000		43,974,000,000
Consumer - Other
Loans and leases receivable, Gross	42,178,000,000	42,178,000,000		43,974,000,000
US installment and revolving credit [Member] | Score 681 or Higher [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	25,525,000,000	25,525,000,000		25,940,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	25,525,000,000	25,525,000,000		25,940,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	25,525,000,000	25,525,000,000		25,940,000,000
Consumer - Other
Loans and leases receivable, Gross	25,525,000,000	25,525,000,000		25,940,000,000
US installment and revolving credit [Member] | Score 615 to 680 [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	8,686,000,000	8,686,000,000		8,846,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	8,686,000,000	8,686,000,000		8,846,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	8,686,000,000	8,686,000,000		8,846,000,000
Consumer - Other
Loans and leases receivable, Gross	8,686,000,000	8,686,000,000		8,846,000,000
US installment and revolving credit [Member] | Score 614 or Less [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	7,967,000,000	7,967,000,000		9,188,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	7,967,000,000	7,967,000,000		9,188,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	7,967,000,000	7,967,000,000		9,188,000,000
Consumer - Other
Loans and leases receivable, Gross	7,967,000,000	7,967,000,000		9,188,000,000
Non US auto [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	7,141,000,000	7,141,000,000		7,558,000,000
Past Due Financing Receivables
Over 30 days past due	3.40%			3.30%
Over 90 days past due	0.50%	0.50%		0.60%
Nonaccrual Financing Receivables
Nonaccrual loans	39,000,000	39,000,000		46,000,000
Nonearning financing receivables	39,000,000	39,000,000		46,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	7,141,000,000	7,141,000,000		7,558,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	7,141,000,000	7,141,000,000		7,558,000,000
Consumer - Other
Loans and leases receivable, Gross	7,141,000,000	7,141,000,000		7,558,000,000
Non US auto [Member] | Score 681 or Higher [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	4,823,000,000	4,823,000,000		5,379,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	4,823,000,000	4,823,000,000		5,379,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	4,823,000,000	4,823,000,000		5,379,000,000
Consumer - Other
Loans and leases receivable, Gross	4,823,000,000	4,823,000,000		5,379,000,000
Non US auto [Member] | Score 615 to 680 [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	1,440,000,000	1,440,000,000		1,330,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	1,440,000,000	1,440,000,000		1,330,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	1,440,000,000	1,440,000,000		1,330,000,000
Consumer - Other
Loans and leases receivable, Gross	1,440,000,000	1,440,000,000		1,330,000,000
Non US auto [Member] | Score 614 or Less [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	878,000,000	878,000,000		849,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	878,000,000	878,000,000		849,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	878,000,000	878,000,000		849,000,000
Consumer - Other
Loans and leases receivable, Gross	878,000,000	878,000,000		849,000,000
Consumer Other Financing Receivable [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	8,528,000,000	8,528,000,000		8,304,000,000
Past Due Financing Receivables
Over 30 days past due	4.00%			4.20%
Over 90 days past due	2.20%	2.20%		2.30%
Nonaccrual Financing Receivables
Nonaccrual loans	549,000,000	549,000,000		600,000,000
Nonearning financing receivables	490,000,000	490,000,000		478,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	8,528,000,000	8,528,000,000		8,304,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	8,528,000,000	8,528,000,000		8,304,000,000
Consumer - Other
Loans and leases receivable, Gross	8,528,000,000	8,528,000,000		8,304,000,000
Consumer Other Financing Receivable [Member] | Secured Credit Quality Indicator Low Risk [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	6,568,000,000	6,568,000,000		6,415,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	6,568,000,000	6,568,000,000		6,415,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	6,568,000,000	6,568,000,000		6,415,000,000
Consumer - Other
Loans and leases receivable, Gross	6,568,000,000	6,568,000,000		6,415,000,000
Consumer Other Financing Receivable [Member] | Secured Credit Quality Indicator Moderate Risk [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	742,000,000	742,000,000		822,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	742,000,000	742,000,000		822,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	742,000,000	742,000,000		822,000,000
Consumer - Other
Loans and leases receivable, Gross	742,000,000	742,000,000		822,000,000
Consumer Other Financing Receivable [Member] | Secured Credit Quality Indicator High Risk [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	1,218,000,000	1,218,000,000		1,067,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	1,218,000,000	1,218,000,000		1,067,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	1,218,000,000	1,218,000,000		1,067,000,000
Consumer - Other
Loans and leases receivable, Gross	1,218,000,000	1,218,000,000		1,067,000,000
Consumer Other Portfolio [Member]
Financing Receivables and Allowance for Losses
Allowance for losses (specific reserves)	94,000,000	94,000,000
Impaired Loans
Total impaired loans	2,770,000,000	2,770,000,000
Allowance for losses (specific reserves)	94,000,000	94,000,000
Consumer Other Portfolio [Member] | Impaired Financing Receivable with No Related Allowance [Member]
Impaired Loans
Total impaired loans	122,000,000	122,000,000
Consumer Other Portfolio [Member] | Impaired Financing Receivable with Related Allowance [Member]
Impaired Loans
Total impaired loans	419,000,000	419,000,000
Consumer Other Portfolio [Member] | Impaired Loans [Member]
Impaired Loans
Unpaid principal balance	2,465,000,000	2,465,000,000
Remaining Consumer Business [Member]
Financing Receivables and Allowance for Losses
Allowance for losses (specific reserves)	478,000,000	478,000,000
Impaired Loans
Unpaid principal balance	1,975,000,000	1,975,000,000
Allowance for losses (specific reserves)	478,000,000	478,000,000
Average investment in loans		2,126,000,000
Remaining Consumer Business [Member] | Impaired Financing Receivable with Related Allowance [Member]
Impaired Loans
Total impaired loans	2,229,000,000	2,229,000,000
Installment And Revolving Credit [Member] | Score 614 or Less [Member]
Installment And Revolving Credit
Percent of Financing Receivable Accounts With Credit Bureau Equivalent of 614 Or Less	7.00%	7.00%
Performing Financing Receivable [Member]
Financing Receivables and Allowance for Losses
Loans and leases receivable, Gross	116,855,000,000	116,855,000,000		117,431,000,000
Credit Quality Indicators
Loans and leases receivable, Gross	116,855,000,000	116,855,000,000		117,431,000,000
Installment And Revolving Credit
Loans and leases receivable, Gross	116,855,000,000	116,855,000,000		117,431,000,000
Consumer - Other
Loans and leases receivable, Gross	116,855,000,000	116,855,000,000		117,431,000,000
Impaired Financing Receivable with Related Allowance [Member]
Impaired Loans
Total impaired loans	$ 2,648,000,000	$ 2,648,000,000
Score 614 or Less [Member]
Installment And Revolving Credit
Percent of Financing Receivable Accounts With Credit Bureau Equivalent of 614 Or Less	93.00%	93.00%