Other assets impairments, restructuring and other items - Components of costs associated with restructuring plan including costs related to exit and disposal activities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 146	$ 133	$ 120
Employee termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	117	117	71
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 29	$ 16	$ 49