Earnings per Share - Narrative (Detail) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Treasury stock, shares acquired	0	0
Consolidated Graphics, Inc
Earnings Per Share [Abstract]
Stock issued in conjunction with acquisitions, shares	16.0
Esselte Corporation
Earnings Per Share [Abstract]
Stock issued in conjunction with acquisitions, shares	1.0