Pension Plans, Postretirement and Other Employee Benefits - Significant Concentrations of Risk (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Investment in Tenneco stock	$ 4
Investment in Tenneco stock as a percentage of total plan assets	0.20%
Level 1
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Investment in Tenneco stock		$ 4
Investment in Tenneco stock as a percentage of total plan assets		0.20%