Acquisitions and Divestitures - Purchase Price Allocation (Details) - Federal-Mogul $ / shares in Units, $ in Millions	Oct. 01, 2018 USD ($) $ / shares shares
Business Acquisition [Line Items]
Tenneco share price at October 1, 2018 \| $ / shares	$ 41.99
Cash Consideration	$ 811
Repayment of Federal-Mogul debt and accrued interest	1,660
Total consideration	$ 3,707
Common Stock
Business Acquisition [Line Items]
Tenneco shares issued for purchase of Federal-Mogul \| shares	29,444,846
Fair value of the Stock Consideration	$ 1,236

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 805
-SubTopic 30
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-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

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The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.

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