Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2021

Pension [Member]

Net Periodic Benefit Cost

	Successor		Predecessor
	Pension		Pension
	For the three months		For the three months
	ended September 30,		ended September 30,
($ in millions)	2021		2020
Components of total pension benefit cost
Service cost	$	20	$	24
Interest cost on projected benefit obligation		26		26
Expected return on plan assets		(49)		(40)
Recognition of actuarial loss		-		29
Net periodic pension benefit cost	$	(3)	$	39
	Successor		Predecessor
	Pension		Pension
	For the five months		For the four months		For the nine months
	ended September 30,		ended April 30,		ended September 30,
($ in millions)	2021		2021		2020
Components of total pension benefit cost
Service cost	$	33	$	32	$	73
Interest cost on projected benefit obligation		44		31		84
Expected return on plan assets		(80)		(61)		(129)
Recognition of actuarial loss		-		24		76
Net periodic pension benefit cost		(3)		26		104
Pension settlement costs		-		-		159
Gain on disposal, net		-		-		(50)
Total pension benefit cost	$	(3)	$	26	$	213

Postretirement [Member]

Net Periodic Benefit Cost

	Successor		Predecessor
	Postretirement		Postretirement
	For the three months		For the three months
	ended September 30,		ended September 30,
($ in millions)	2021		2020
Components of net periodic postretirement benefit cost
Service cost	$	4	$	5
Interest cost on projected benefit obligation		7		8
Amortization of prior service credit		(2)		(8)
Recognition of actuarial loss		54		1
Net periodic postretirement benefit cost	$	63	$	6
	Successor		Predecessor
	Postretirement		Postretirement
	For the five months		For the four months		For the nine months
	ended September 30,		ended April 30,		ended September 30,
($ in millions)	2021		2021		2020
Components of net periodic postretirement benefit cost
Service cost	$	7	$	7	$	15
Interest cost on projected benefit obligation		12		9		24
Amortization of prior service credit		(3)		(10)		(24)
Recognition of actuarial loss		67		5		4
Net periodic postretirement benefit cost		83		11		19
One-time gain on sale		-		-		(24)
Net periodic postretirement benefit cost	$	83	$	11	$	(5)