Pension and Postretirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2019

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
	2019						2018						2017
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.
Interest cost	$	40		$	8		$	43		$	7		$	51		$	7
Expected return on plan assets	(51		)	(3		)	(71		)	(3		)	(82		)	(3		)
Service cost				8						7						7
Amortization of net actuarial loss	22			6			28			6			23			7
Settlement charge	256			3
Termination benefit																1
Curtailment				(1		)
Other										2
Net periodic benefit cost (credit)	267			21			—			19			(8		)	19
Recognized in OCI:
Amount due to net actuarial (gains) losses	(107		)	33			11			4			22			4
Reclassification adjustment for net actuarial losses in net periodic benefit cost	(278		)	(9		)	(28		)	(6		)	(23		)	(7		)
Curtailment																(1		)
Other										(2		)
Total recognized in OCI	(385		)	24			(17		)	(4		)	(1		)	(4		)
Net recognized in benefit cost (credit) and OCI	$	(118	)	$	45		$	(17	)	$	15		$	(9	)	$	15

	OPEB
	2019					2018			2017
	U.S.		Non-U.S.			Non-U.S.			Non-U.S.
Interest cost	$	—	$	3		$	3		$	3
Service cost						1			1
Amortization of net actuarial gain			(1		)
Net periodic benefit cost	—		2			4			4
Recognized in OCI:
Amount due to net actuarial (gains) losses	1		2			(7		)	2
Reclassification adjustment for net actuarial gain in net periodic benefit cost			1
Total recognized in OCI	1		3			(7		)	2
Net recognized in benefit cost (credit) and OCI	$	1	$	5		$	(3	)	$	6

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												OPEB
	2019						2018						2019						2018
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.			Non-U.S.
Reconciliation of benefit obligation:
Obligation at beginning of period	$	1,501		$	364		$	1,730		$	377		$	—		$	83		$	99
Interest cost	40			8			43			7						3			3
Service cost				8						7									1
Actuarial (gain) loss	13			41			(148		)	7			1			2			(7		)
Benefit payments	(90		)	(14		)	(124		)	(14		)	(1		)	(4		)	(5		)
Acquisitions	161			25									3
Settlements	(853		)	(13		)				(2		)
Curtailment				(1		)
Translation adjustments				(6		)				(18		)				4			(8		)
Obligation at end of period	$	772		$	412		$	1,501		$	364		$	3		$	88		$	83

	Pension Benefits												OPEB
	2019						2018						2019						2018
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.			Non-U.S.
Reconciliation of fair value of plan assets:
Fair value at beginning of period	$	1,301		$	71		$	1,513		$	71		$	—		$	—		$	—
Actual return on plan assets	171			11			(88		)	6
Employer contributions	59			17						16			1			4			5
Benefit payments	(90		)	(14		)	(124		)	(14		)	(1		)	(4		)	(5		)
Settlements	(853		)	(13		)				(2		)
Acquisitions	136			7
Translation adjustments				(1		)				(6		)
Fair value at end of period	$	724		$	78		$	1,301		$	71		$	—		$	—		$	—
Funded status at end of period	$	(48	)	$	(334	)	$	(200	)	$	(293	)	$	(3	)	$	(88	)	$	(83	)

Amounts Recognized in the Balance Sheet [Table Text Block]

Amounts recognized in the balance sheet —

	Pension Benefits												OPEB
	2019						2018						2019						2018
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.			Non-U.S.
Amounts recognized in the consolidated balance sheet:
Noncurrent assets	$	—		$	4		$	—		$	3		$	—		$	—		$	—
Current liabilities				(13		)				(13		)				(5		)	(5		)
Noncurrent liabilities	(48		)	(325		)	(200		)	(283		)	(3		)	(83		)	(78		)
Net amount recognized	$	(48	)	$	(334	)	$	(200	)	$	(293	)	$	(3	)	$	(88	)	$	(83	)

Amounts recognized in AOCI —

	Pension Benefits											OPEB
	2019					2018						2019					2018
	U.S.		Non-U.S.			U.S.			Non-U.S.			U.S.		Non-U.S.			Non-U.S.
Amounts recognized in AOCI:
Net actuarial loss (gain)	$	157	$	108		$	542		$	84		$	1	$	(12	)	$	(15	)
AOCI before tax	157		108			542			84			1		(12		)	(15		)
Deferred taxes	13		(28		)	(6		)	(22		)			4			4
Net	$	170	$	80		$	536		$	62		$	1	$	(8	)	$	(11	)

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:

	2019				2018
	U.S.		Non-U.S.		U.S.		Non-U.S.
Plans with fair value of plan assets in excess of obligations:
Accumulated benefit obligation	$	15	$	17	$	14	$	15
Projected benefit obligation	15		17		14		16
Fair value of plan assets	16		21		15		19
Plans with obligations in excess of fair value of plan assets:
Accumulated benefit obligation	$	757	$	363	$	1,487	$	322
Projected benefit obligation	757		395		1,487		348
Fair value of plan assets	708		57		1,286		52

Fair Value of Pension Plan Assets [Table Text Block]

Fair value of pension plan assets —

			Fair Value Measurements at December 31, 2019
			U.S.								Non-U.S.
Asset Category	Total		Level 1		Level 2		Level 3		NAV (a)		Level 1		Level 2		Level 3
Equity securities:
U.S. all cap (b)	$	39	$	39	$	—	$	—	$	—	$	—	$	—	$	—
U.S. large cap	28								28
EAFE composite	19								19
Emerging markets	9								9
Fixed income securities:
Corporate bonds	492				186				306
U.S. Treasury strips	37				37
Non-U.S. government securities	21												21
Emerging market debt	11								11
Alternative investments:
Insurance contracts (d)	50						4								46
Real estate	20								20
Other	11												11
Cash and cash equivalents	65				65
Total	$	802	$	39	$	288	$	4	$	393	$	—	$	32	$	46

			Fair Value Measurements at December 31, 2018
			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)	$	35	$	35	$	—	$	—	$	—	$	—	$	—
U.S. large cap	43						43
U.S. small cap	4		4
EAFE composite	41						41
Emerging markets	28						28
Fixed income securities:
U.S. bonds (c)	33				33
Corporate bonds	814				616		198
U.S. Treasury strips	115				115
Non-U.S. government securities	25										25
Emerging market debt	48						48
Alternative investments:
Insurance contracts (d)	35												35
Real estate	21						21
Other	10										10
Cash and cash equivalents	120				119						1
Total	$	1,372	$	39	$	883	$	379	$	—	$	36	$	35

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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 comprises contracts placed with insurance companies where the underlying assets are invested in fixed interest securities.

Reconciliation of Level 3 Assets [Table Text Block]

	2019		2019			2018
	U.S.		Non-U.S.			Non-U.S.
Reconciliation of Level 3 Assets	Insurance Contracts		Insurance Contracts			Insurance Contracts
Fair value at beginning of period	$	—	$	35		$	33
Actual gains relating to assets still held at the reporting date			7			4
Purchases, sales and settlements	4		5			(1		)
Currency impact			(1		)	(1		)
Fair value at end of period	$	4	$	46		$	35

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 2019:

	1% Point Increase		1% Point Decrease
Effect on total of service and interest cost components	$	—	$	—
Effect on OPEB obligations	9		(8		)

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.		U.S.		Non-U.S.
2020	$	52	$	19	$	—	$	5
2021	52		15				5
2022	52		17				5
2023	51		17				5
2024	50		20				5
2025 to 2029	236		103		1		24
Total	$	493	$	191	$	1	$	49

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		2019	2018		2019		2018		2017
SPT	23-6648508 / 499	Green	Green	No	$	13	$	12	$	11	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:

	2019				2018				2017
	U.S.		Non-U.S.		U.S.		Non-U.S.		U.S.		Non-U.S.
Pension benefit obligations:
Discount rate	3.21	%	1.72	%	4.22	%	2.42	%	3.55	%	2.25	%
Net periodic benefit cost:
Discount rate	3.41	%	2.50	%	2.56	%	2.54	%	3.24	%	2.34	%
Rate of compensation increase	N/A		3.28	%	N/A		3.21	%	N/A		3.33	%
Expected return on plan assets	6.00	%	4.61	%	6.00	%	4.66	%	6.00	%	5.92	%

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:

	2019				2018		2017
	U.S.		Non-U.S.		Non-U.S.		Non-U.S.
OPEB benefit obligations:
Discount rate	3.37	%	3.10	%	3.71	%	3.41	%
Net periodic benefit cost:
Discount rate	4.08	%	3.76	%	3.42	%	3.70	%
Initial health care cost trend rate	N/A		4.22	%	4.12	%	5.07	%
Ultimate health care cost trend rate	N/A		4.93	%	5.10	%	5.07	%
Year ultimate reached	N/A		2023		2023		2018