Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information from collateralized securities received

($ in millions)	Nine months ended September 30,
	2021		2020
Net change in proceeds managed
Net change in short-term investments	$	(579)	$	211
Operating cash flow (used) provided	(579)		211
Net change in cash	12		(6)
Net change in proceeds managed	$	(567)	$	205
Cash flows from operating activities
Net change in liabilities
Liabilities for collateral, beginning of period	$	(914)	$	(1,298)
Liabilities for collateral, end of period	(1,481)		(1,093)
Operating cash flow provided (used)	$	567	$	(205)