Cash, Cash Equivalents, and Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The following tables categorize the fair values of cash, cash equivalents, and marketable securities measured at fair value on a recurring basis on our balance sheet (in millions):

		December 31, 2015
	Fair Value  Level	Automotive		Financial Services		All Other		Consolidated
Cash and cash equivalents
U.S. government	1	$	115	$	—	$	—	$	115
U.S. government agencies	2	22		—		—		22
Non-U.S. government and agencies	2	173		266		—		439
Corporate debt	2	20		—		—		20
Total marketable securities classified as cash equivalents		330		266		—		596
Cash, time deposits, and money market funds		5,056		8,620		—		13,676
Total cash and cash equivalents		$	5,386	$	8,886	$	—	$	14,272
Marketable securities
U.S. government	1	$	1,623	$	298	$	—	$	1,921
U.S. government agencies	2	5,240		1,169		—		6,409
Non-U.S. government and agencies	2	7,451		832		—		8,283
Corporate debt	2	3,279		384		—		3,663
Equities	1	240		—		—		240
Other marketable securities	2	348		40		—		388
Total marketable securities		$	18,181	$	2,723	$	—	$	20,904
		December 31, 2016
	Fair Value  Level	Automotive		Financial Services		All Other		Consolidated
Cash and cash equivalents
U.S. government	1	$	888	$	924	$	—	$	1,812
U.S. government agencies	2	—		—		—		—
Non-U.S. government and agencies	2	200		142		—		342
Corporate debt	2	100		—		—		100
Total marketable securities classified as cash equivalents		1,188		1,066		—		2,254
Cash, time deposits, and money market funds		6,632		7,011		8		13,651
Total cash and cash equivalents		$	7,820	$	8,077	$	8	$	15,905
Marketable securities
U.S. government	1	$	8,099	$	1,634	$	—	$	9,733
U.S. government agencies	2	2,244		505		—		2,749
Non-U.S. government and agencies	2	4,751		632		—		5,383
Corporate debt	2	4,329		475		—		4,804
Equities	1	165		—		—		165
Other marketable securities	2	54		34		—		88
Total marketable securities		$	19,642	$	3,280	$	—	$	22,922

Available-for-sale Securities [Table Text Block]

The following tables include cash equivalents and marketable securities accounted for as available for sale (“AFS”) securities (in millions):

	December 31, 2015
										Fair Value of Securities with Contractual Maturities
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Within 1 Year		After 1 Year through 5 Years		After 5 Years through 10 Years
Automotive
U.S. government	$	—	$	—	$	—		$	—	$	—	$	—	$	—
U.S. government agencies	—		—		—			—		—		—		—
Non-U.S. government and agencies	82		—		(12		)	70		—		70		—
Corporate debt	—		—		—			—		—		—		—
Total	$	82	$	—	$	(12	)	$	70	$	—	$	70	$	—
	December 31, 2016
										Fair Value of Securities with Contractual Maturities
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Within 1 Year		After 1 Year through 5 Years		After 5 Years through 10 Years
Automotive
U.S. government	$	3,703	$	2	$	(14	)	$	3,691	$	727	$	2,776	$	188
U.S. government agencies	308		—		(2		)	306		—		306		—
Non-U.S. government and agencies	1,443		1		(11		)	1,433		148		1,285		—
Corporate debt	1,079		—		—			1,079		1,031		48		—
Total	$	6,533	$	3	$	(27	)	$	6,509	$	1,906	$	4,415	$	188

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

The following tables present fair values and gross unrealized losses for cash equivalents and marketable securities accounted for as AFS securities that were in an unrealized loss position, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in millions):

	December 31, 2015
	Less than 1 year					1 Year or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Automotive
U.S. government	$	—	$	—		$	—	$	—	$	—	$	—
U.S. government agencies	—		—			—		—		—		—
Non-U.S. government and agencies	70		(12		)	—		—		70		(12		)
Corporate debt	—		—			—		—		—		—
Total	$	70	$	(12	)	$	—	$	—	$	70	$	(12	)
	December 31, 2016
	Less than 1 year					1 Year or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Automotive
U.S. government	$	1,474	$	(14	)	$	—	$	—	$	1,474	$	(14	)
U.S. government agencies	261		(2		)	—		—		261		(2		)
Non-U.S. government and agencies	1,137		(11		)	—		—		1,137		(11		)
Corporate debt	—		—			—		—		—		—
Total	$	2,872	$	(27	)	$	—	$	—	$	2,872	$	(27	)