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Pension Plans, Postretirement and Other Employee Benefits - Significant Concentrations of Risk (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Investment in Tenneco stock	$ 1	$ 1
Fair Value, Inputs, Level 1
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Investment in Tenneco stock	$ 22	$ 33
Investment in Tenneco stock as a percentage of total plan assets	4.00%	5.00%

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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