Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Summary of Information related to operating leases

Information related to our operating leases follows (dollars in millions).

	Right-of-use assets		Lease liabilities		Weighted average remaining term in years		Weighted average discount rate used to measure liabilities
December 31, 2023	$	5,277	$	5,299		7.0		4.2	%
December 31, 2022		4,975		4,939		7.0		3.7	%

Summary of remaining operating lease payments

A summary of our remaining future operating lease payments reconciled to lease liabilities as of December 31, 2023 and December 31, 2022 follows (in millions).

	Year 1		Year 2		Year 3		Year 4		Year 5		Thereafter		Total lease payments		Amount representing interest			Lease liabilities
December 31:
2023	$	1,422	$	1,172	$	815	$	666	$	463	$	1,680	$	6,218	$	(919	)	$	5,299
2022		1,283		1,073		822		560		449		1,464		5,651		(712	)		4,939

Components of operating lease expenses

Components of operating lease expense for each of the three years ending December 31, 2023, are summarized as follows (in millions).

	2023		2022		2021
Operating lease expense	$	1,535	$	1,361	$	1,426
Short-term lease expense		219		233		154
Variable lease expense		216		217		223
	$	1,970	$	1,811	$	1,803