Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2022

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost (Credit)

Components of net periodic benefit cost (credit) consist of the following (dollars in millions):

	Pension Plans						Post-retirement Benefits
	For the Three Months Ended June 30,						For the Three Months Ended June 30,
	2022			2021			2022			2021
Net periodic benefit cost (credit):
Service cost	$	2		$	2		$	1		$	1
Interest cost		2			2			—			1
Expected return on assets		(2	)		(2	)		—			—
Prior service credit		—			—			(2	)		(3	)
Net periodic benefit cost (credit)	$	2		$	2		$	(1	)	$	(1	)

	Pension Plans						Post-retirement Benefits
	For the Six Months Ended June 30,						For the Six Months Ended June 30,
	2022			2021			2022			2021
Net periodic benefit cost (credit):
Service cost	$	4		$	5		$	1		$	1
Interest cost		3			3			1			1
Expected return on assets		(4	)		(4	)		—			—
Prior service credit		—			—			(5	)		(5	)
Net periodic benefit cost (credit)	$	3		$	4		$	(3	)	$	(3	)