Other Income (Tables)

12 Months Ended

Dec. 31, 2019

Other Income and Expenses [Abstract]

Components of Other Earnings

($ in millions)	2019		2018		2017
Gain on sale of assets(1)		$7		$33		$28
Royalty income	8		10		11
Share of net earnings of equity affiliates (See Note 6)	11		16		12
Gain on disposal of ownership interest in business affiliate	—		—		25
Income from a legal settlement	—		—		18
Other	63		55		56
Total		$89		$114		$150