Supplemental Cash Flow Statement Disclosures (Tables)

12 Months Ended

Dec. 31, 2019

Supplemental Cash Flow Statement Disclosures

Schedule of cash, cash equivalents and restricted cash

	December 31,
($ in millions)	2019		2018
Beginning of period:
Cash and cash equivalents	$	721	$	448
Current restricted cash (included in other current assets)		7		10
Noncurrent restricted cash (included in other assets)		—		1
Total cash, cash equivalents and restricted cash	$	728	$	459
End of period:
Cash and cash equivalents	$	1,798	$	721
Current restricted cash (included in other current assets)		8		7
Total cash, cash equivalents and restricted cash	$	1,806	$	728