Pension and Postretirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Components of Net Periodic Benefit Cost (Credit) and Other Amounts Recognized in OCI [Table Text Block]

Components of net periodic benefit cost (credit) and other amounts recognized in OCI —

	Pension Benefits
	2017						2016						2015
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.
Interest cost	$	51		$	7		$	53		$	7		$	66		$	8
Expected return on plan assets	(82		)	(3		)	(92		)	(2		)	(108		)	(2		)
Service cost				7						5						5
Amortization of net actuarial loss	23			7			21			6			18			7
Termination benefit				1
Other										1
Net periodic benefit cost (credit)	(8		)	19			(18		)	17			(24		)	18
Recognized in OCI:
Amount due to net actuarial (gains) losses	22			4			68			16			40			(6		)
Reclassification adjustment for net actuarial losses in net periodic benefit cost	(23		)	(7		)	(21		)	(6		)	(18		)	(7		)
Curtailment				(1		)
Other										(1		)				(11		)
Total recognized in OCI	(1		)	(4		)	47			9			22			(24		)
Net recognized in benefit cost (credit) and OCI	$	(9	)	$	15		$	29		$	26		$	(2	)	$	(6	)

	OPEB - Non-U.S.
	2017		2016			2015
Interest cost	$	3	$	3		$	3
Service cost	1		1			1
Amortization of net actuarial gain			(1		)
Net periodic benefit cost	4		3			4
Recognized in OCI:
Amount due to net actuarial (gains) losses	2		4			(6		)
Reclassification adjustment for net actuarial gain in net periodic benefit cost			1
Total recognized in OCI	2		5			(6		)
Net recognized in benefit cost and OCI	$	6	$	8		$	(2	)

Reconciliation of Changes in Benefit Obligations, Plan Assets and Funded Status [Table Text Block]

Funded status — The following tables provide reconciliations of the changes in benefit obligations, plan assets and funded status.

	Pension Benefits
	2017						2016						OPEB - Non-U.S.
	U.S.			Non-U.S.			U.S.			Non-U.S.			2017			2016
Reconciliation of benefit obligation:
Obligation at beginning of period	$	1,682		$	309		$	1,692		$	288		$	91		$	86
Interest cost	51			7			53			7			3			3
Service cost				7						5			1			1
Actuarial (gain) loss	115			7			59			18			2			4
Benefit payments	(118		)	(14		)	(122		)	(12		)	(5		)	(5		)
Acquisitions				22
New plans										14
Settlements				(1		)				(2		)
Termination benefit				1
Curtailment				(1		)
Other										(5		)
Translation adjustments				40						(4		)	7			2
Obligation at end of period	$	1,730		$	377		$	1,682		$	309		$	99		$	91

The amount included on the New plans line in the preceding table includes obligations under a pension plan in Switzerland, gratuity plans in India and a termination benefit plan covering certain employees in Italy. We determined in 2016 that these obligations should be included within our defined benefit pension plan obligation and the related disclosures. The adjustments were primarily reclassifications from other noncurrent liabilities to pension and postretirement obligations and did not have a material impact on pension expense.

	Pension Benefits
	2017						2016						OPEB - Non-U.S.
	U.S.			Non-U.S.			U.S.			Non-U.S.			2017			2016
Reconciliation of fair value of plan assets:
Fair value at beginning of period	$	1,454		$	51		$	1,493		$	40		$	—		$	—
Actual return on plan assets	175			6			83			4
Employer contributions	2			15						15			5			5
Benefit payments	(118		)	(14		)	(122		)	(12		)	(5		)	(5		)
Settlements				(1		)				(2		)
New plans										4
Acquisition				12
Translation adjustments				2						2
Fair value at end of period	$	1,513		$	71		$	1,454		$	51		$	—		$	—
Funded status at end of period	$	(217	)	$	(306	)	$	(228	)	$	(258	)	$	(99	)	$	(91	)

Amounts Recognized in the Balance Sheet [Table Text Block]

Amounts recognized in the balance sheet —

	Pension Benefits
	2017						2016						OPEB - Non-U.S.
	U.S.			Non-U.S.			U.S.			Non-U.S.			2017			2016
Amounts recognized in the consolidated balance sheet:
Noncurrent assets	$	—		$	3		$	—		$	2		$	—		$	—
Current liabilities				(13		)				(9		)	(5		)	(5		)
Noncurrent liabilities	(217		)	(296		)	(228		)	(251		)	(94		)	(86		)
Net amount recognized	$	(217	)	$	(306	)	$	(228	)	$	(258	)	$	(99	)	$	(91	)

Amounts recognized in AOCI —

	Pension Benefits
	2017						2016						OPEB - Non-U.S.
	U.S.			Non-U.S.			U.S.			Non-U.S.			2017			2016
Amounts recognized in AOCI:
Net actuarial loss (gain)	$	559		$	88		$	560		$	92		$	(8	)	$	(10	)
AOCI before tax	559			88			560			92			(8		)	(10		)
Deferred taxes	(10		)	(22		)	(17		)	(24		)	3			3
Net	$	549		$	66		$	543		$	68		$	(5	)	$	(7	)

Aggregate Funding Levels [Table Text Block]

Aggregate funding levels — The following table presents information regarding the aggregate funding levels of our defined benefit pension plans at December 31:

	2017				2016
	U.S.		Non-U.S.		U.S.		Non-U.S.
Plans with fair value of plan assets in excess of obligations:
Accumulated benefit obligation	$	16	$	15	$	—	$	15
Projected benefit obligation	16		15				15
Fair value of plan assets	16		18				17
Plans with obligations in excess of fair value of plan assets:
Accumulated benefit obligation	1,714		334		1,682		272
Projected benefit obligation	1,714		362		1,682		294
Fair value of plan assets	1,497		53		1,454		34

Fair Value of Pension Plan Assets [Table Text Block]

Fair value of pension plan assets —

			Fair Value Measurements at December 31, 2017
			U.S.							Non-U.S.
Asset Category	Total		Level 1		Level 2			NAV (a)		Level 1		Level 2		Level 3
Equity securities:
U.S. all cap (b)	$	62	$	62	$	—		$	—	$	—	$	—	$	—
U.S. large cap	61							61
U.S. small cap	7		7
EAFE composite	65							65
Emerging markets	52							52
Fixed income securities:
U.S. bonds (c)	61				61
Corporate bonds	464				226			238
U.S. Treasury strips	281				281
Non-U.S. government securities	26											26
Emerging market debt	82							82
Alternative investments:
Insurance contracts (e)	33													33
Real estate	35							35
Other (f)	1				(10		)					11
Cash and cash equivalents	354				353							1
Total	$	1,584	$	69	$	911		$	533	$	—	$	38	$	33

			Fair Value Measurements at December 31, 2016
			U.S.						Non-U.S.
Asset Category	Total		Level 1		Level 2		NAV (a)		Level 1		Level 2		Level 3
Equity securities:
U.S. all cap (b)	$	76	$	76	$	—	$	—	$	—	$	—	$	—
U.S. large cap	102						102
U.S. small cap	26		26
EAFE composite	119						119
Emerging markets	66						66
Fixed income securities:
U.S. bonds (c)	137				67		70
Corporate bonds	419				198		221
U.S. Treasury strips	269				269
Non-U.S. government securities	25										25
Emerging market debt	65						65
Alternative investments:
Hedge fund of funds (d)	66						66
Insurance contracts (e)	16												16
Real estate	36						36
Other (f)	10				1						9
Cash and cash equivalents	73				72						1
Total	$	1,505	$	102	$	607	$	745	$	—	$	35	$	16

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Notes:

(a) Certain assets are measured at fair value using the net asset value (NAV) per share (or its equivalent) practical expedient and have not been classified in the fair value hierarchy.

(b) This category comprises a combination of small-, mid- and large-cap equity stocks that are allocated at the investment manager's discretion. Investments include common and preferred securities as well as equity funds that invest in these instruments.

(c) This category represents a combination of high-yield and investment grade corporate bonds, sovereign bonds, Yankee bonds, asset-backed securities and U.S. government bonds. Investments include fixed income funds that invest in these instruments.

(d) This category includes fund managers that invest in a well-diversified group of hedge funds where strategies include, but are not limited to, event driven, relative value, long/short market neutral, multistrategy and global macro. Investments may be made directly or through pooled funds.

(e) This category comprises contracts placed with insurance companies where the underlying assets are invested in fixed interest securities.

(f) Other assets in the U.S. represent interest rate derivatives which had a market value of $(10) at December 31, 2017 and $1 at December 31, 2016.

Reconciliation of Level 3 Assets [Table Text Block]

	2017		2016
	Non-U.S.		Non-U.S.
Reconciliation of Level 3 Assets	Insurance Contracts		Insurance Contracts
Fair value at beginning of period	$	16	$	12
Actual gains relating to assets still held at the reporting date	3
Purchases, sales and settlements	1
Currency impact	3
Transfers into (out of) Level 3	10		4
Fair value at end of period	$	33	$	16

One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

A one-percentage-point change in assumed health care cost trend rates would have the following effects for 2017:

	1% Point Increase		1% Point Decrease
Effect on total of service and interest cost components	$	1	$	(1	)
Effect on OPEB obligations	10		(9		)

Expected Future Benefit Payments [Table Text Block]

Estimated future benefit payments and contributions — Expected benefit payments by our pension and OPEB plans for each of the next five years and for the following five-year period are as follows:

	Pension Benefits				OPEB
Year	U.S.		Non-U.S.		Non-U.S.
2018	$	135	$	17	$	5
2019	1,072		26		5
2020	44		17		5
2021	43		17		5
2022	43		19		5
2023 to 2027	204		105		27
Total	$	1,541	$	201	$	52

Multiemployer Pension Plans [Table Text Block]

	Employer Identification Number/ Plan Number	PPA Zone Status		Funding Plan Pending/ Implemented	Contributions by Dana						Surcharge Imposed
Pension Fund		2017	2016		2017		2016		2015
SPT	23-6648508 / 499	Green	Green	No	$	11	$	10	$	10	No

Pension Plan [Member]

Significant Weighted Average Assumptions Used [Table Text Block]

Significant assumptions — The significant weighted-average assumptions used in the measurement of pension benefit obligations at December 31 of each year and the net periodic benefit cost for each year are as follows:

	2017				2016				2015
	U.S.		Non-U.S.		U.S.		Non-U.S.		U.S.		Non-U.S.
Pension benefit obligations:
Discount rate	3.55	%	2.25	%	3.92	%	2.48	%	4.13	%	2.83	%
Net periodic benefit cost:
Discount rate	3.24	%	2.34	%	3.29	%	2.56	%	3.81	%	3.75	%
Rate of compensation increase	N/A		3.33	%	N/A		3.12	%	N/A		4.83	%
Expected return on plan assets	6.00	%	5.92	%	6.50	%	5.42	%	7.00	%	5.87	%

Other Postretirement Benefits Plan [Member]

Significant Weighted Average Assumptions Used [Table Text Block]

The significant weighted-average assumptions used in the measurement of OPEB obligations at December 31 of each year and the net periodic benefit cost for each year are as follows:

	2017		2016		2015
	Non-U.S.		Non-U.S.		Non-U.S.
OPEB benefit obligations:
Discount rate	3.41	%	3.69	%	3.96	%
Net periodic benefit cost:
Discount rate	3.70	%	3.45	%	3.84	%
Initial health care cost trend rate	5.07	%	5.32	%	5.62	%
Ultimate health care cost trend rate	5.07	%	5.02	%	5.03	%
Year ultimate reached	2018		2018		2018