Supplemental Cash Flow Statement Disclosures (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Statement Disclosures

Schedule of cash, cash equivalents and restricted cash

	December 31,
($ in millions)	2021		2020
Beginning of period:
Cash and cash equivalents	$	1,366	$	1,798
Current restricted cash (included in other current assets)		15		8
Total cash, cash equivalents and restricted cash	$	1,381	$	1,806
End 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