Revenue from Contracts With Customers (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer

Schedule of the disaggregation of revenue by timing of transfer of control

	Year Ended December 31, 2019
($ in millions)	Point in Time		Over Time		Total
Total net sales	$	2,220	$	9,254	$	11,474
	Year Ended December 31, 2018
($ in millions)	Point in Time		Over Time		Total
Total net sales	$	2,634	$	9,001	$	11,635

Schedule of balances of contract liabilities

	Contract		Contract
	Liabilities		Liabilities
($ in millions)	(Current)		(Noncurrent)
Balance at December 31, 2017	$	45	$	—
Increase		—		8
Balance at December 31, 2018	$	45	$	8
Increase		42		1
Balance at December 31, 2019	$	87	$	9

Schedule of transaction price allocated to remaining performance obligations

($ in millions)	Next Twelve Months		Thereafter		Total
Sales expected to be recognized on multi-year contracts in place as of December 31, 2019	$	1,409	$	1,067	$	2,476