Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of year	$ 728,490	$ 689,000	$ 613,200
Additions based on tax positions related to the current year	73,300	91,500	47,800
Additions for tax positions of prior years	135,300	172,500	166,900
Reductions for tax positions of prior years	(10,000)	(43,700)	(57,400)
Acquisitions and other	140,600	36,600	18,200
Lapse of statute of limitations	(26,300)	(36,300)	(96,100)
Settlements	(18,900)	(149,700)	(3,800)
Effect of foreign currency translation	(32,300)	(31,400)	200
Unrecognized tax benefits, end of year	$ 990,200	$ 728,490	$ 689,000