Acquisitions (Tables)

3 Months Ended

Mar. 31, 2013

Business Combinations [Abstract]

Pro forma results of operations

The 2012 supplemental pro forma earnings reflect adjustments to earnings from continuing operations as reported in the unaudited Condensed Consolidated Statements of Comprehensive Earnings to exclude $805 of nonrecurring expenses related to the fair value adjustments to acquisition-date inventory and intangibles (after-tax) and $1,800 of acquisition-related costs (after-tax).  The 2012 supplemental pro forma earnings are also adjusted to reflect the comparable impact of additional depreciation and amortization expense (net of tax) resulting from the fair value measurement of tangible and intangible assets relating to these acquisitions. These pro forma results have been prepared for comparative purposes to current year, and do not purport to be indicative of the results of operations that actually would have resulted had the acquisitions occurred on the dates indicated or that may result in the future.

	Three Months Ended March 31,
	2013		2012
Revenue from continuing operations:
As reported	$	2,039,573	$	1,954,614
Pro forma	n/a		2,108,672
Earnings from continuing operations:
As reported	$	196,989	$	186,409
Pro forma	n/a		199,079
Basic earnings per share from continuing operations:
As reported	$	1.14	$	1.01
Pro forma	n/a		1.08
Diluted earnings per share from continuing operations:
As reported	$	1.12	$	1.00
Pro forma	n/a		1.07