Retirement Plans - Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost (Details)	6 Months Ended		12 Months Ended
	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
United States
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	4.50%	3.50%	4.00%	[1]	3.75%	4.75%
Expected return on plan assets			7.75%		8.00%	8.00%
Rate of compensation increase			0.00%		0.00%	0.00%
International
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate			2.70%		4.09%	4.56%
Expected return on plan assets			4.53%		4.32%	4.92%
Rate of compensation increase			2.00%		2.57%	2.77%

[1] The discount rate of 4.00 percent used to determine the 2013 net periodic benefit cost for the U.S. plan is an average of the discount rates used during the year of 3.50 percent for the first six months of the year and 4.50 percent for the last six months of the year.