Investment and Other Income (Loss), Net	12 Months Ended
	Dec. 31, 2021
Investment and Other Income (Loss), Net [Abstract]
Investment and Other Income (Loss), Net	(13) Investment and Other Income (Loss), Net: The components of investment and other income (loss), net are as follows: Successor Predecessor For the eight For the four For the year For the year months ended months ended ended ended December 31, April 30, December 31, December 31, ($ in millions) 2021 2021 2020 2019 Interest and dividend income $ 1  $ - $ 4  $ 9  Pension and OPEB benefit (costs) 2  2  (43) (42) All other, net (8) (1) (4) (4) Total investment and other income (loss), net $ (5) $ 1  $ (43) $ (37) Pension and OPEB benefit (cost) consists of interest costs, expected return on plan assets, amortization of prior service (costs) and recognition of actuarial (gain) loss. Service cost components of pension and OPEB benefit costs are included in “Selling, general, and administrative expenses” on our consolidated statements of operations.