Premiums Receivable and Other Insurance Assets Premiums Receivable and Other Insurance Assets (Tables)

12 Months Ended

Dec. 31, 2016

Premiums Receivable and Other Insurance Assets [Abstract]

Premiums Receivable and Other Insurance Assets [Table Text Block]

Premiums receivable and other insurance assets consisted of the following.

December 31, ($ in millions)	2016		2015
Prepaid reinsurance premiums	$	439	$	382
Reinsurance recoverable on unpaid losses	108		120
Reinsurance recoverable on paid losses	20		18
Premiums receivable	80		82
Deferred policy acquisition costs	1,258		1,199
Total premiums receivable and other insurance assets	$	1,905	$	1,801