Income Taxes Effective Rate (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]
Statutory U.S. federal income tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	1.60%	1.50%	1.70%
Benefits and taxes related to foreign operations	(7.20%)	(8.50%)	(3.40%)
Unrecognized tax benefits	(0.20%)	0.10%	(0.80%)
Adjustment to current and deferred taxes, prior years	0.00%	(0.50%)	(0.90%)
Other	(0.60%)	0.90%	(1.40%)
Effective income tax rates	28.60%	28.50%	30.20%
Discontinued operations [Member]
Operating Loss Carryforwards [Line Items]
Effective income tax rates	37.10%	37.10%