SCHEDULE V - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

SCHEDULE V - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE V – VALUATION AND QUALIFYING ACCOUNTS

Years Ended December 31, 2016, 2015 and 2014

($ millions)	At December 31
	2016		2015		2014
Valuation allowance for deferred tax assets:
Balance at beginning of period	$	—	$	—	$	82.6
Deductions	—		—		82.6
Balance at end of period	$	—	$	—	$	—