Income Taxes (Details 3)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Federal statutory corporate tax rate reconciles to effective income tax rate
Statutory U.S. federal tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	0.30%	0.60%	1.50%
Foreign earnings taxed at lower effective rates	(6.30%)	(9.20%)	(8.70%)
Nondeductible acquisition costs	2.50%
U.S. domestic manufacturing deduction	(2.40%)	(1.10%)	(1.00%)
Net change in unrecognized tax benefits	0.40%		1.70%
Other	1.50%	0.20%	(2.60%)
Effective income tax rate	31.00%	25.50%	25.90%