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Investment And Other Income (Loss)
3 Months Ended
Mar. 31, 2020
Investment And Other Income (Loss) [Abstract]  
Investment And Other Income (Loss) (11) Investment and Other Income (Loss):

The following is a summary of the components of Investment and Other Income (loss) for the three months ended March 31, 2020 and 2019:

For the three months ended

March 31,

($ in millions)

2020

2019

Interest and dividend income

$

2

$

3

Pension and OPEB benefit (costs)

1

(11)

All other, net

2

(1)

Total investment and other income (loss), net

$

5

$

(9)

Pension and OPEB benefit (costs) consist of interest costs, expected return on plan assets, amortization of prior service costs (credit) and amortization of unrecognized (gain) loss. The driver of the change for the three months ended March 31, 2020 as compared to the prior year period, primarily relates to an increase in the expected return on plan assets combined with increased amortization of prior service credits.