Pension and Postretirement Benefit Plans - Narrative (Detail) $ in Millions	9 Months Ended
	Oct. 03, 2021 USD ($)
Pension Plan [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 127
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	259
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 35