EMPLOYEE BENEFIT PLANS

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANSNet periodic benefit costs for qualified defined-benefit plans include the following (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Service cost	$	13	$	13	$	26	$	26
Pension expense included in Wages and benefits	13		13		26		26
Interest cost	14		19		28		38
Expected return on assets	(30)		(27)		(61)		(55)
Recognized actuarial loss	9		8		18		17
Pension expense included in Nonoperating Income (Expense)	$	(7)	$	—	$	(15)	$	—