Condensed Consolidated Statements Of Income (USD $) In Millions, except Per Share data	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Oct. 01, 2010		Sep. 30, 2011		Oct. 01, 2010
Condensed Consolidated Statements Of Income [Abstract]
Net Sales	$ 701.0	[1]	$ 656.9	[1]	$ 2,018.2	[1]	$ 1,932.3	[1]
Cost of sales	391.1		367.9		1,120.2		1,067.0
Gross Profit	309.9		289.0		898.0		865.3
Marketing expenses	91.8		90.2		248.5		241.9
Selling, general and administrative expenses	91.8		85.8		274.3		258.5
Income from Operations	126.3		113.0		375.2		364.9
Equity in earnings of affiliates	2.9		0.8		8.3		3.6
Investment earnings	0.6		0.2		1.4		0.4
Other income (expense), net	(1.6)		(0.1)		(0.8)		0.2
Interest expense	(2.2)		(8.0)		(7.5)		(21.5)
Income before Income Taxes	126.0	[2]	105.9	[2]	376.6	[2]	347.6	[2]
Income taxes	46.4		36.4		130.8		123.9
Net Income	79.6		69.5		245.8		223.7
Noncontrolling interest	0		0		0		0
Net Income attributable to Church & Dwight Co., Inc.	$ 79.6		$ 69.5		$ 245.8		$ 223.7
Weighted average shares outstanding - Basic	143.7		142.2		143.3		141.9
Weighted average shares outstanding - Diluted	146.3		144.4		145.9		144.3
Net income per share - Basic	$ 0.55		$ 0.49		$ 1.72		$ 1.58
Net income per share - Diluted	$ 0.54		$ 0.48		$ 1.68		$ 1.55
Cash dividends per share	$ 0.17		$ 0.09		$ 0.51		$ 0.22

[1] Intersegment sales from Consumer International to Consumer Domestic were $1.2 million and $1.0 million for the quarters ended September 30, 2011 and October 1, 2010, respectively, and were $3.7 million and $2.7 million for the nine months ended September 30, 2011 and October 1, 2010, respectively.

[2] In determining Income before Income Taxes, interest expense, investment earnings and other income (expense) were allocated among the segments based upon each segment's relative operating profit.