Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jan. 01, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Interest expense capitalized	$ 14	$ 13	$ 52	$ 33
Depreciation expense	495	$ 403	1,380	$ 1,130
Gross finance leased assets	2,600		2,600			$ 2,280
Accumulated depreciation on property and equipment under finance leases	1,110		1,110			816
Property, plant and equipment, net	17,298		17,298		$ 12,702	12,747
Production Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, net	$ 1,890		$ 1,890			$ 1,770