Employee Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of net periodic pension cost for the Company's defined-benefit pension plans

Net periodic pension cost for our defined-benefit pension plans, with the exception of service cost, is recorded in other, net, in our condensed consolidated statements of operations. Net periodic pension cost for our defined-benefit pension plans was as follows, in millions: 

	Three Months Ended June 30,
	2021				2020
	Qualified		Non-Qualified		Qualified		Non-Qualified
Service cost	$	1	$	—	$	—	$	—
Interest cost	5		—		7		1
Expected return on plan assets	(3)		—		(5)		—
Settlement loss	406		—		—		—
Amortization of net loss	5		1		5		1
Net periodic pension cost	$	414	$	1	$	7	$	2

	Six Months Ended June 30,
	2021				2020
	Qualified		Non-Qualified		Qualified		Non-Qualified
Service cost	$	2	$	—	$	1	$	—
Interest cost	13		1		13		2
Expected return on plan assets	(7)		—		(11)		—
Settlement loss	406		—		—		—
Amortization of net loss	11		2		11		2
Net periodic pension cost	$	425	$	3	$	14	$	4