Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

($ in millions)	Useful Lives (years)	2020	2019
Land and land improvements	1-30	$541	$511
Buildings	20-40	1,673	1,573
Machinery and equipment	5-25	3,794	3,575
Other	3-20	1,123	1,092
Construction in progress		345	314
Total(1)		$7,476	$7,065
Less: accumulated depreciation		4,349	4,082
Net		$3,127	$2,983

(1)Interest capitalized in 2020, 2019 and 2018 was $6 million, $6 million and $4 million, respectively.