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Discontinued Operations and Assets and Liabilities Held For Sale (Operating Results of Discontinued Operations) (Details) - Discontinued Operations, Disposed of by Sale - AMS - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Revenue $ 179 $ 863 $ 179 $ 29,714
Litigation-related and other contingencies, net 775,474 0 775,684 2,450
Asset impairment charges 0 149 0 21,328
Loss from discontinued operations before income taxes (791,588) (22,492) (804,485) (91,324)
Income tax benefit (91,090) 23,724 (95,582) 0
Discontinued operations, net of tax $ (700,498) $ (46,216) $ (708,903) $ (91,324)