Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information from collateralized securities received

The accompanying cash flows are included in cash flows from operating activities in the Consolidated Statements of Cash Flows along with the activities resulting from management of the proceeds, which for the years ended December 31 are as follows:

($ in millions)	2020		2019		2018
Net change in proceeds managed
Net change in fixed income securities	$	—	$	28	$	94
Net change in short-term investments	196		(33)		(77)
Operating cash flow provided (used)	196		(5)		17
Net change in cash	—		—		—
Net change in proceeds managed	$	196	$	(5)	$	17
Net change in liabilities
Liabilities for collateral, beginning of year	$	(530)	$	(525)	$	(542)
Liabilities for collateral, end of year	(334)		(530)		(525)
Operating cash flow (used) provided	$	(196)	$	5	$	(17)