Parent And Guarantor Consolidating Financial Statements (Schedule Of Condensed Consolidating Statement of Cash Flow) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 932		$ 2,254
Purchases of available-for-sale securities	(907)		(4,626)
Proceeds from sales of available-for-sale securities	1,354		1,543
Proceeds from maturities of available-for-sale securities	592		1,604
Net (increase) decrease in finance receivables and loans	492		(42)
Net (increase) decrease in operating lease assets	(1,075)		(1,711)
Capital contributions to subsidiaries	0		0
Returns of contributed capital	0		0
Proceeds from sale of business units, net	0	[1]	2,829	[1]
Increase (Decrease) in Restricted Cash	1,580		1,067
Other, net	111		41
Net cash (used in) provided by investing activities	2,147		705
Net change in short-term borrowings	(3,384)		518
Net increase in bank deposits	2,017		2,360
Proceeds from issuance of long-term debt	9,402		4,253
Repayments of long-term debt	(10,683)		(11,445)
Net Change in Debt, Intercompany	0		0
Dividends paid	(68)		(200)
Dividends paid and returns of contributed capital, Intercompany	0		0
Capital contributions from parent	0		0
Net cash provided by (used in) financing activities	(2,716)		(4,514)
Effect of exchange-rate changes on cash and cash equivalents	(1)		67
Cash and Cash Equivalents, Period Increase (Decrease)	362		(1,488)
Net Cash Provided by (Used in) Discontinued Operations	0	[1],[2]	1,412	[1],[2]
Cash and cash equivalents at beginning of period	5,531		7,513
Cash and cash equivalents at end of period	5,893		7,437
Intercompany [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net (increase) decrease in finance receivables and loans	0		0
Parent [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(207)		5,272
Purchases of available-for-sale securities	0		0
Proceeds from sales of available-for-sale securities	0		0
Proceeds from maturities of available-for-sale securities	0		0
Net (increase) decrease in finance receivables and loans	1,918		(5,260)
Net (increase) decrease in operating lease assets	563		(354)
Capital contributions to subsidiaries	(651)		(126)
Returns of contributed capital	295		158
Proceeds from sale of business units, net			409
Increase (Decrease) in Restricted Cash	0		0
Other, net	(1)		11
Net cash (used in) provided by investing activities	2,826		(5,531)
Net change in short-term borrowings	179		135
Net increase in bank deposits	(19)		(148)
Proceeds from issuance of long-term debt	1,269		24
Repayments of long-term debt	(4,635)		(347)
Net Change in Debt, Intercompany	85		161
Dividends paid	(68)		(200)
Dividends paid and returns of contributed capital, Intercompany	0		0
Capital contributions from parent	0		0
Net cash provided by (used in) financing activities	(3,189)		(375)
Effect of exchange-rate changes on cash and cash equivalents	0		0
Cash and Cash Equivalents, Period Increase (Decrease)	(570)		(634)
Net Cash Provided by (Used in) Discontinued Operations			0
Cash and cash equivalents at beginning of period	2,930		3,977
Cash and cash equivalents at end of period	2,360		3,343
Parent [Member] | Intercompany [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net (increase) decrease in finance receivables and loans	702		(369)
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(11)		3,109
Purchases of available-for-sale securities	0		0
Proceeds from sales of available-for-sale securities	0		0
Proceeds from maturities of available-for-sale securities	0		0
Net (increase) decrease in finance receivables and loans	0		80
Net (increase) decrease in operating lease assets	0		0
Capital contributions to subsidiaries	0		0
Returns of contributed capital	0		149
Proceeds from sale of business units, net			0
Increase (Decrease) in Restricted Cash	0		(26)
Other, net	0		0
Net cash (used in) provided by investing activities	0		454
Net change in short-term borrowings	0		35
Net increase in bank deposits	0		0
Proceeds from issuance of long-term debt	0		0
Repayments of long-term debt	0		(70)
Net Change in Debt, Intercompany	0		(271)
Dividends paid	0		0
Dividends paid and returns of contributed capital, Intercompany	0		(3,254)
Capital contributions from parent	0		0
Net cash provided by (used in) financing activities	0		(3,560)
Effect of exchange-rate changes on cash and cash equivalents	0		0
Cash and Cash Equivalents, Period Increase (Decrease)	(11)		3
Net Cash Provided by (Used in) Discontinued Operations			(3)
Cash and cash equivalents at beginning of period	37		0
Cash and cash equivalents at end of period	26		0
Guarantor Subsidiaries [Member] | Intercompany [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net (increase) decrease in finance receivables and loans	0		251
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1,271		426
Purchases of available-for-sale securities	(907)		(4,626)
Proceeds from sales of available-for-sale securities	1,354		1,543
Proceeds from maturities of available-for-sale securities	592		1,604
Net (increase) decrease in finance receivables and loans	(1,426)		5,138
Net (increase) decrease in operating lease assets	(1,638)		(1,357)
Capital contributions to subsidiaries	0		0
Returns of contributed capital	0		0
Proceeds from sale of business units, net			2,420
Increase (Decrease) in Restricted Cash	1,580		1,093
Other, net	112		30
Net cash (used in) provided by investing activities	(417)		6,157
Net change in short-term borrowings	(3,563)		348
Net increase in bank deposits	2,036		2,553
Proceeds from issuance of long-term debt	8,133		4,229
Repayments of long-term debt	(6,048)		(11,028)
Net Change in Debt, Intercompany	(702)		118
Dividends paid	0		0
Dividends paid and returns of contributed capital, Intercompany	(416)		(3,606)
Capital contributions from parent	651		126
Net cash provided by (used in) financing activities	91		(7,260)
Effect of exchange-rate changes on cash and cash equivalents	(1)		67
Cash and Cash Equivalents, Period Increase (Decrease)	944		(610)
Net Cash Provided by (Used in) Discontinued Operations			1,415
Cash and cash equivalents at beginning of period	2,974		4,027
Cash and cash equivalents at end of period	3,918		4,832
Non-Guarantor Subsidiaries [Member] | Intercompany [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net (increase) decrease in finance receivables and loans	(84)		312
Consolidation, Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(121)		(6,553)
Purchases of available-for-sale securities	0		0
Proceeds from sales of available-for-sale securities	0		0
Proceeds from maturities of available-for-sale securities	0		0
Net (increase) decrease in finance receivables and loans	0		0
Net (increase) decrease in operating lease assets	0		0
Capital contributions to subsidiaries	651		126
Returns of contributed capital	(295)		(307)
Proceeds from sale of business units, net			0
Increase (Decrease) in Restricted Cash	0		0
Other, net	0		0
Net cash (used in) provided by investing activities	(262)		(375)
Net change in short-term borrowings	0		0
Net increase in bank deposits	0		(45)
Proceeds from issuance of long-term debt	0		0
Repayments of long-term debt	0		0
Net Change in Debt, Intercompany	617		(8)
Dividends paid	0		0
Dividends paid and returns of contributed capital, Intercompany	416		6,860
Capital contributions from parent	(651)		(126)
Net cash provided by (used in) financing activities	382		6,681
Effect of exchange-rate changes on cash and cash equivalents	0		0
Cash and Cash Equivalents, Period Increase (Decrease)	(1)		(247)
Net Cash Provided by (Used in) Discontinued Operations			0
Cash and cash equivalents at beginning of period	(410)		(491)
Cash and cash equivalents at end of period	(411)		(738)
Consolidation, Eliminations [Member] | Intercompany [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net (increase) decrease in finance receivables and loans	$ (618)		$ (194)

[1] The amount at March 31, 2013, is net of cash and cash equivalents of $905 million of business units at the time of disposition.

[2] Cash flows of discontinued operations are reflected within operating, investing, and financing activities in the Condensed Consolidated Statement of Cash Flows. The cash balance of these operations is reported as assets of operations held-for-sale on the Condensed Consolidated Balance Sheet.