Supplemental Cash Flow Statement Disclosures (Tables)

12 Months Ended

Dec. 31, 2022

Supplemental Cash Flow Statement Disclosures

Schedule of cash, cash equivalents and restricted cash

	December 31,
($ in millions)	2022		2021
Beginning of period:
Cash and cash equivalents	$	563	$	1,366
Current restricted cash (included in other current assets)		16		15
Total cash, cash equivalents and restricted cash	$	579	$	1,381
End of period:
Cash and cash equivalents	$	548	$	563
Current restricted cash (included in other current assets)		10		16
Total cash, cash equivalents and restricted cash	$	558	$	579

Summary of PP&E acquired but not yet paid

	December 31,
($ in millions)	2022		2021
Beginning of period:
PP&E acquired but not yet paid	$	540	$	409
End of period:
PP&E acquired but not yet paid	$	392	$	540