Variable Interest Entities VIEs (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 874,860	$ 830,014	$ 1,246,415	$ 740,481
Other current assets	32,274	35,151
Licenses	1,460,484	1,423,779
Property, plant and equipment, net	3,749,947	3,878,144
Other assets and deferred charges	180,183	164,482
Liabilities
Current liabilities	1,072,704	1,191,756
Variable Interest Entities (VIE's)
Assets
Cash and cash equivalents	2,466	2,076
Other current assets	71	1,184
Licenses	311,476	310,475
Property, plant and equipment, net	15,311	18,600
Other assets and deferred charges	148	511
Total assets	329,472	332,846
Liabilities
Current liabilities	29	46
Deferred liabilities and credits	1,689	3,139
Total liabilities	$ 1,718	$ 3,185