Stockholder's Equity

3 Months Ended

Mar. 31, 2019

Statement of Financial Position [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

(15) Stockholder's Equity

The changes of the Stockholder's Equity items during the three months ended March 31, 2019 and 2018, are as follows:

	BorgWarner Inc. stockholder's equity
(in millions of dollars)	Issued common stock		Capital in excess of par value			Treasury stock			Retained earnings			Accumulated other comprehensive income (loss)			Noncontrolling interests
Balance, December 31, 2018	$	3	$	1,146		$	(1,585	)	$	5,336		$	(674	)	$	119
Dividends declared ($0.17 per share) *	—		—			—			(35		)	—			(20		)
Net issuance for executive stock plan	—		(10		)	7			—			—			—
Net issuance of restricted stock	—		(25		)	21			—			—			—
Purchase of treasury stock	—		—			(69		)	—			—			—
Net earnings	—		—			—			160			—			11
Other comprehensive loss	—		—			—			—			(1		)	1
Balance, March 31, 2019	$	3	$	1,111		$	(1,626	)	$	5,461		$	(675	)	$	111

	BorgWarner Inc. stockholder's equity
(in millions of dollars)	Issued common stock		Capital in excess of par value			Treasury stock			Retained earnings			Accumulated other comprehensive income (loss)			Noncontrolling interests
Balance, December 31, 2017	$	3	$	1,118		$	(1,445	)	$	4,531		$	(490	)	$	109
Dividends declared ($0.17 per share) *	—		—			—			(36		)	—			(18		)
Net issuance for executive stock plan	—		(1		)	4			—			—			—
Net issuance of restricted stock	—		(15		)	12			—			—			—
Purchase of treasury stock	—		—			(57		)	—			—			—
Adoption of accounting standards	—		—			—			16			(14		)	—
Net earnings	—		—			—			225			—			12
Other comprehensive income (loss)	—		—			—			—			60			2
Balance, March 31, 2018	$	3	$	1,102		$	(1,486	)	$	4,736		$	(444	)	$	105

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* The dividends declared relate to BorgWarner common stock.