Basis of Presentation and Accounting Policies Revenue subject to updated guidance (Tables)

3 Months Ended

Mar. 31, 2018

Disaggregation of Revenue [Abstract]

Revenue subject to updated guidance

Revenue from Non-Insurance Contracts with Customers

		Three months ended March 31,
	Revenue Line Item	2018		2017
Commercial Lines
Installment billing fees	Fee income	$	9	$	10
Personal Lines
Installment billing fees	Fee income	10		11
Insurance servicing revenues	Other revenues	19		19
Group Benefits
Administrative services	Fee income	44		19
Mutual Funds
Advisor, distribution and other management fees	Fee income	238		212
Other fees	Fee income	20		26
Corporate	Fee income	2		1
Total revenues subject to updated guidance		$	342	$	298