Reinsurance (Tables)

12 Months Ended

Dec. 31, 2017

Reinsurance Disclosures [Abstract]

Schedule of effect of reinsurance on premiums - traditional long-duration products[Table Text Block]

The effect of reinsurance on premiums for the Company’s traditional long-duration contracts was as follows:

	Years Ended December 31,
	2017			2016			2015
	(in millions)
Direct premiums	$	637		$	642		$	629
Reinsurance ceded	(227		)	(225		)	(223		)
Net premiums	$	410		$	417		$	406

Schedule of effect of reinsurance on premiums - short-duration products [Table Text Block]

The effect of reinsurance on premiums for the Company’s short-duration contracts was as follows:

	Years Ended December 31,
	2017			2016			2015
	(in millions)
Written premiums
Direct	$	1,119		$	1,085		$	1,093
Ceded	(171		)	(20		)	(19		)
Total net written premiums	$	948		$	1,065		$	1,074
Earned premiums
Direct	$	1,107		$	1,094		$	1,068
Ceded	(123		)	(20		)	(19		)
Total net earned premiums	$	984		$	1,074		$	1,049