Basis of Presentation Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Class of Treasury Stock

A summary of share repurchases under our share repurchase program is as follows (in millions, except for per share amounts):

Year	Total number of shares repurchased		Aggregate purchase price		Average price paid per share		Shares remaining as of December 31,
	BKI	BKFS Class A
2017	2.0	1.2	$	136.7	$	42.87	6.8
2018	3.0	—	141.5		47.15		3.8
Total	5.0	1.2	$	278.2	$	44.94