Income Taxes Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Effective Income Tax Rate Reconciliation, Percent	2.50%
Loss carryforwards(1)	$ 174,360,000	[1]	$ 164,254,000
Deferred Tax Assets, Valuation Allowance	161,026,000		138,910,000
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	2,500,000
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	900,000
Deferred Tax Assets, Tax Credit Carryforwards, General Business	28,000,000
Excess tax benefits from employee stock plan exercises	55,200,000
Tax effect of excess benefits from employee stock plan exercises, which will increase our common stock when it reduces our cash taxes payable, and which is not recognized in our deferred tax assets	20,500,000
Amount of unrecognized tax benefits that may reasonably possibly decrease within 12 months	2,100,000
Undistributed Earnings of Foreign Subsidiaries and Foreign Corporate Joint Ventures [Member]
Undistributed Earnings of Foreign Subsidiaries	22,500,000		48,800,000
U.S. federal
Loss carryforwards(1)	23,100,000	[1]
LUXEMBOURG
Loss carryforwards(1)	$ 408,100,000	[1]

[1] For tax return purposes at December 31, 2013, we had U.S. federal loss carryforwards of $23.1 million that expire during the years 2020 and 2021. At December 31, 2013, we have net operating loss carryforwards in Luxembourg of $408.1 million that can be carried forward indefinitely, offset by a full valuation allowance (see discussion below). The remaining portion of the loss carryforwards are composed primarily of losses in various other foreign jurisdictions. The majority of these losses can be carried forward indefinitely. At December 31, 2013, there was a valuation allowance of $161.0 million primarily associated with foreign loss carryforwards.