Fair Value Measurements - Input Hierarchy of Items Measured at Fair Value on a Recurring Basis (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Valuation Methodologies
Number of Days At Which Fair Value of Finance Receivables Is Measured	greater than 120 days past due or deemed to be uncollectible
Number Of Days Used To Determine Short Term Highly Liquid Investments Treatment As Cash Equivalents	90 days
Number Of Days Used To Determine Investments Treatment As Marketable Securities, Minimum	90 days
Term At Which Fair Value of Finance Receivables is Measured	120 days
Securities Purchased under Agreements to Resell [Abstract]
Securities Purchased under Agreements to Resell, Gross	$ 128,000,000	$ 51,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets	1,400,000,000
Cash and cash equivalents
Valuation Methodologies
Number of days for evaluating classification of investments	90 days or less from the date of acquisition
Marketable securities [Member]
Valuation Methodologies
Number of days for evaluating classification of investments	maturity date greater than 90 days at the date of purchase
Automotive [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	560,000,000	241,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	410,000,000	610,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	944,000,000	1,222,000,000
Marketable securities
Marketable securities	20,260,000,000	18,178,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets	560,000,000	241,000,000
Total assets at fair value	21,764,000,000	19,641,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	410,000,000	610,000,000
Total liabilities at fair value	410,000,000	610,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	403,000,000
Marketable securities
Marketable securities	4,372,000,000	4,493,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	350,000,000	718,000,000
Marketable securities
Marketable securities	6,189,000,000	5,459,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		139,000,000
Marketable securities
Marketable securities	1,036,000,000	1,367,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. government agencies [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	191,000,000	365,000,000
Marketable securities
Marketable securities	5,955,000,000	4,794,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities	2,232,000,000	1,871,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities	186,000,000	25,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Equities [Member]
Marketable securities
Marketable securities	262,000,000	142,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities	28,000,000	27,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	548,000,000	218,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	328,000,000	486,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Contract [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	12,000,000	23,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	82,000,000	124,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Cash equivalents - financial instruments [Member]
Input Hierarchy of Items Measured at Fair Value on a Recurring Basis - Footnote Narrative
Par Value Assets Excluded From Fair Value By Input	2,600,000,000	3,000,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Cash [Member]
Input Hierarchy of Items Measured at Fair Value on a Recurring Basis - Footnote Narrative
Par Value Assets Excluded From Fair Value By Input	1,900,000,000	2,000,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	403,000,000
Marketable securities
Marketable securities	4,634,000,000	4,635,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets
Total assets at fair value	5,037,000,000	4,635,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities
Total liabilities at fair value
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	403,000,000	0
Marketable securities
Marketable securities	4,372,000,000	4,493,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Non-U.S. government agencies [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Equities [Member]
Marketable securities
Marketable securities	262,000,000	142,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Commodity Contract [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	541,000,000	1,222,000,000
Marketable securities
Marketable securities	15,626,000,000	13,543,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets	559,000,000	237,000,000
Total assets at fair value	16,726,000,000	15,002,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	398,000,000	598,000,000
Total liabilities at fair value	398,000,000	598,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	350,000,000	718,000,000
Marketable securities
Marketable securities	6,189,000,000	5,459,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		139,000,000
Marketable securities
Marketable securities	1,036,000,000	1,367,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Non-U.S. government agencies [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	191,000,000	365,000,000
Marketable securities
Marketable securities	5,955,000,000	4,794,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities	2,232,000,000	1,871,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities	186,000,000	25,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equities [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities	28,000,000	27,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	548,000,000	218,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	328,000,000	486,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Commodity Contract [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	11,000,000	19,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	70,000,000	112,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities
Derivative Financial Instrument Assets
Derivative financial instruments assets	1,000,000	4,000,000
Total assets at fair value	1,000,000	4,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	12,000,000	12,000,000
Total liabilities at fair value	12,000,000	12,000,000
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Non-U.S. government agencies [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equities [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Automotive [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Commodity Contract [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	1,000,000	4,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	12,000,000	12,000,000
Financial Services [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	818,000,000	1,300,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	386,000,000	381,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	247,000,000	324,000,000
Marketable securities
Marketable securities	3,084,000,000	2,106,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets	818,000,000	1,300,000,000
Total assets at fair value	4,149,000,000	3,730,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	386,000,000	381,000,000
Total liabilities at fair value	386,000,000	381,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	201,000,000	200,000,000
Marketable securities
Marketable securities	1,235,000,000	620,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		20,000,000
Marketable securities
Marketable securities	400,000,000	12,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	46,000,000	103,000,000
Marketable securities
Marketable securities	108,000,000	142,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. government agencies [Member]
Marketable securities
Marketable securities	36,000,000	95,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		1,000,000
Marketable securities
Marketable securities	1,249,000,000	1,155,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities	56,000,000	67,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities		15,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Interest rate contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	778,000,000	1,291,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	316,000,000	256,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	14,000,000	9,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	12,000,000	8,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Cross-currency interest rate swap contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	26,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	58,000,000	117,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Cash equivalents - financial instruments [Member]
Input Hierarchy of Items Measured at Fair Value on a Recurring Basis - Footnote Narrative
Par Value Assets Excluded From Fair Value By Input	5,300,000,000	6,500,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Cash [Member]
Input Hierarchy of Items Measured at Fair Value on a Recurring Basis - Footnote Narrative
Par Value Assets Excluded From Fair Value By Input	2,300,000,000	2,600,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	201,000,000	200,000,000
Marketable securities
Marketable securities	1,235,000,000	620,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets
Total assets at fair value	1,436,000,000	820,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities
Total liabilities at fair value
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	201,000,000	200,000,000
Marketable securities
Marketable securities	1,235,000,000	620,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Non-U.S. government agencies [Member]
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest rate contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Cross-currency interest rate swap contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	46,000,000	124,000,000
Marketable securities
Marketable securities	1,849,000,000	1,486,000,000
Derivative Financial Instrument Assets
Derivative financial instruments assets	818,000,000	1,300,000,000
Total assets at fair value	2,713,000,000	2,910,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	386,000,000	381,000,000
Total liabilities at fair value	386,000,000	381,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		20,000,000
Marketable securities
Marketable securities	400,000,000	12,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments	46,000,000	103,000,000
Marketable securities
Marketable securities	108,000,000	142,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Non-U.S. government agencies [Member]
Marketable securities
Marketable securities	36,000,000	95,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		1,000,000
Marketable securities
Marketable securities	1,249,000,000	1,155,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities	56,000,000	67,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities		15,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest rate contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	778,000,000	1,291,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	316,000,000	256,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	14,000,000	9,000,000
Derivative financial instruments liabilities
Derivative financial instruments liabilities	12,000,000	8,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Cross-currency interest rate swap contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets	26,000,000	0
Derivative financial instruments liabilities
Derivative financial instruments liabilities	58,000,000	117,000,000
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments
Marketable securities
Marketable securities
Derivative Financial Instrument Assets
Derivative financial instruments assets
Total assets at fair value
Derivative financial instruments liabilities
Derivative financial instruments liabilities
Total liabilities at fair value
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. government-sponsored enterprises [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Non-U.S. government [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Non-U.S. government agencies [Member]
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate Debt [Member]
Cash equivalents - financial instruments
Cash equivalents - financial instruments		0
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage-backed and other asset-backed [Member]
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other liquid investments [Member]
Marketable securities
Marketable securities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest rate contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		0
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Foreign currency exchange contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities
Financial Services [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Cross-currency interest rate swap contracts [Member]
Derivative Financial Instrument Assets
Derivative financial instruments assets		0
Derivative financial instruments liabilities
Derivative financial instruments liabilities		$ 0