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Debt Instrument, Redemption Price, Redeemable Principal Amount

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Ownership Percentage Transferred

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The percentage ownership of equity in the investee.

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Payments For Investments In Equity Securities

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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Number of shares of equity interests issued or issuable to acquire entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date.

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Face amount or stated value per share of common stock.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage of principal amount of debt redeemed.

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of noncash expense for share-based payment arrangement.

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Recent Transactions and Events (Details) $ / shares in Units, shares in Millions				1 Months Ended		3 Months Ended				9 Months Ended
	Oct. 05, 2020 USD ($)	Oct. 01, 2020 USD ($) $ / shares shares	Jan. 02, 2019 USD ($)	Sep. 30, 2019 USD ($)	May 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Oct. 30, 2019
Business Acquisition
Repayments of debt										$ 308,000,000	$ 54,000,000
Stock-based compensation expense										29,000,000	30,000,000
Payments for investments in equity securities					$ 50,000,000					2,000,000	52,000,000
Asset impairments						$ 0		$ 0		26,000,000	0
Payments for business acquired										2,000,000	$ 10,000,000
Subsequent Event \| Delphi Technologies PLC
Business Acquisition
Common stock, par or stated value (in per share) \| $ / shares		$ 0.01
DT Notes \| Subsequent Event \| Senior Notes
Business Acquisition
Debt instrument face value	$ 800,000,000
Debt instrument stated interest rate (in percent)	5.00%
Redeemable principal amount	$ 776,000,000
Percentage of principal amount redeemed	97.00%
Senior notes	$ 24,000,000
Delphi Technologies PLC \| Subsequent Event
Business Acquisition
Percentage of voting interests acquired		100.00%
Delphi Technologies revised exchange ratio		0.4307
Business combination, consideration transferred		$ 2,400,000,000
Equity interest issued or issuable (in shares) \| shares		37
Equity interest issued or issuable		$ 1,500,000,000
Repayments of debt		900,000,000
Stock-based compensation expense		15,000,000
Delphi Technologies PLC \| Subsequent Event \| Senior Notes
Business Acquisition
Financial liabilities assumed		$ 800,000,000
Rinehart Motion Systems LLC and AM Racing LLC
Business Acquisition
Business combination, consideration transferred			$ 15,000,000
Payments for business acquired							$ 2,000,000		$ 10,000,000
Business combination, contingent consideration, liability						$ 3,000,000				$ 3,000,000
BorgWarner Morse TEC LLC
Business Acquisition
Ownership percentage transferred (in percent)												100.00%
Romeo Systems, Inc.
Business Acquisition
Ownership percentage in investee (in percent)						20.00%				20.00%
Asset impairments							9,000,000
Fair value of equity investment							$ 41,000,000
BorgWarner Romeo Power LLC
Business Acquisition
Ownership percentage in investee (in percent)				60.00%				60.00%			60.00%
Payments to acquire interest in joint venture				$ 10,000,000