Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021		Jun. 30, 2020		Jun. 30, 2021		Jun. 30, 2020
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 1,798		$ 1,132		$ 3,139		$ 2,606
Other comprehensive income/(loss):
Defined benefit plans	24		18		49		40
Foreign currency translation	19		(61)		(7)		(56)
Total other comprehensive income/(loss)	43	[1]	(43)	[1]	42	[2]	(16)	[2]
Comprehensive income	$ 1,841		$ 1,089		$ 3,181		$ 2,590

[1] Net of deferred taxes of ($10) million and ($5) million during the three months ended June 30, 2021 and 2020, respectively.

[2] Net of deferred taxes of ($18) million and ($12) million during the six months ended June 30, 2021 and 2020, respectively.