Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Summary of remaining operating lease payments

A summary of our remaining operating lease payments as of December 31, 2019 and December 31, 2018 follows (in millions).

	Year 1		Year 2		Year 3		Year 4		Year 5		Thereafter		Total lease payments		Amount representing interest			Lease liabilities
December 31:
2019	$	1,374	$	1,183	$	950	$	764	$	620	$	1,988	$	6,879	$	(997	)	$	5,882
2018		1,310		1,268		1,048		820		658		2,079		7,183

Components of operating lease costs

Components of operating lease costs in 2019 by type were as follows (in millions).

Operating lease cost		Short-term lease cost		Variable lease cost		Sublease income			Total lease cost
$	1,459	$	178	$	276	$	(24	)	$	1,889