Redeemable Noncontrolling Interest (Tables)

6 Months Ended

Jun. 30, 2015

Temporary Equity Disclosure [Abstract]

Redeemable Noncontrolling Interest

The components of redeemable noncontrolling interest (NCI) at June 30, 2015, were:

($ in millions)
Balance at March 31, 2015	$	0
Fair value at date of acquisition	411.5
Net income attributable to NCI	5.2
Other comprehensive loss attributable to NCI	(2.8		)
Purchase of shares from NCI	(12.6		)
Change in redemption value of NCI	32.1
Balance at June 30, 2015	$	433.4