Schedule of Goodwill Carrying Value Rollfoward (Details 4) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2015
Goodwill Gross Value [Member]
Goodwill
Goodwill, Gross	$ 2,510,049	$ 2,501,410
Impact of excess tax basis amortization	(5,329)
Other, including changes in foreign exchange rates	13,968
Goodwill Accumulated Impairment [Member]
Goodwill
Goodwill, Impaired, Accumulated Impairment Loss	(1,161,900)	(1,161,900)
Impact of excess tax basis amortization	0
Other, including changes in foreign exchange rates	0
Goodwill Net Value [Member]
Goodwill
Goodwill	1,348,149	$ 1,339,510
Impact of excess tax basis amortization	(5,329)
Other, including changes in foreign exchange rates	$ 13,968