Restructuring Costs - Summary of Activity of Restructuring Reserves (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Restructuring Reserve [Line Items]
Beginning balance	$ 34,929
Additions to the reserve	35,097
Interest accretion	1,790
Non-cash write-offs	(2,576)
Cash payments and other usage	(26,414)
Ending balance	42,826
Severance / Other
Restructuring Reserve [Line Items]
Beginning balance	1,143
Additions to the reserve	11,106
Cash payments and other usage	(10,790)
Ending balance	1,459
Facilities
Restructuring Reserve [Line Items]
Beginning balance	33,786
Additions to the reserve	23,991
Interest accretion	1,790
Non-cash write-offs	(2,576)
Cash payments and other usage	(15,624)
Ending balance	$ 41,367