15. Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Data [Table Text Block]

As reported:	First Quarter		Second Quarter		Third Quarter			Fourth Quarter
2013
Net sales	$	499.7	$	525.3	$	505.1		$	602.6
Gross profit	271.4		300.1		284.2			322.7
Net income (loss) attributable to Bio-Rad	19.5		34.7		(7.1		)	30.1
Basic earnings (loss) per share	$	0.68	$	1.22	$	(0.25	)	$	1.05
Diluted earnings (loss) per share	$	0.68	$	1.20	$	(0.25	)	$	1.04
2012
Net sales	$	486.3	$	510.4	$	498.7		$	573.8
Gross profit	278.6		287.9		273.5			314.1
Net income attributable to Bio-Rad	31.0		48.3		42.4			42.0
Basic earnings per share	$	1.10	$	1.71	$	1.50		$	1.48
Diluted earnings per share	$	1.09	$	1.69	$	1.48		$	1.46

Adjustments:	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
2013
Net sales	$	—	$	—		$	—	$	—
Gross profit	—		—			—		—
Net income (loss) attributable to Bio-Rad	0.7		(0.1		)	—		—
Basic earnings (loss) per share	$	0.03	$	(0.01	)	$	—	$	—
Diluted earnings (loss) per share	$	0.02	$	—		$	—	$	—
2012
Net sales	$	—	$	—		$	—	$	—
Gross profit	0.1		0.2			0.3		0.4
Net income attributable to Bio-Rad	0.5		(0.2		)	0.2		1.2
Basic earnings per share	$	0.02	$	(0.01	)	$	0.01	$	0.04
Diluted earnings per share	$	0.01	$	(0.01	)	$	0.01	$	0.05

As revised:	First Quarter		Second Quarter		Third Quarter			Fourth Quarter
2013
Net sales	$	499.7	$	525.3	$	505.1		$	602.6
Gross profit	271.4		300.1		284.2			322.7
Net income (loss) attributable to Bio-Rad	20.2		34.6		(7.1		)	30.1
Basic earnings (loss) per share	$	0.71	$	1.21	$	(0.25	)	$	1.05
Diluted earnings (loss) per share	$	0.70	$	1.20	$	(0.25	)	$	1.04
2012
Net sales	$	486.3	$	510.4	$	498.7		$	573.8
Gross profit	278.7		288.1		273.8			314.5
Net income attributable to Bio-Rad	31.5		48.1		42.6			43.2
Basic earnings per share	$	1.12	$	1.70	$	1.51		$	1.52
Diluted earnings per share	$	1.10	$	1.68	$	1.49		$	1.51