Basis of Presentation (Unaudited) (Tables)

The following table presents the effect of aggregate net EAC adjustments:



	Three Months Ended March 31
$ in millions, except per share data	2019		2018
Operating income	$	138	$	116
Net earnings⁽¹⁾	109		92
Diluted earnings per share⁽¹⁾	0.64		0.52


⁽¹⁾	Based on a 21 percent statutory tax rate

The components of accumulated other comprehensive loss are as follows:



$ in millions	March 31, 2019			December 31, 2018
Unamortized prior service credit, net of tax expense of $28 for 2019 and $32 for 2018	$	87		$	98
Cumulative translation adjustment	(143		)	(144		)
Other, net	(3		)	(6		)
Total accumulated other comprehensive loss	$	(59	)	$	(52	)