Fair Value of Financial Instruments (Nonrecurring) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets of discontinued operations	$ 681	$ 4,267
Property and equipment, net	375,654	368,614
Goodwill	1,881,547	1,780,758	$ 1,390,674
Other intangible assets, net	352,148	278,270
Investment in affiliates, net	69,205	103,598
Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets of discontinued operations			19,961
Property and equipment, net	0	0	0
Goodwill		0	77,616
Other intangible assets, net			0
Investment in affiliates, net		0
Non-financial instruments		0	97,577
Total Losses, non-financial instruments		5,330	54,047
Nonrecurring Basis [Member] | Assets of discontinued operations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Losses, non-financial instruments			9,614
Nonrecurring Basis [Member] | Property and equipment, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Losses, non-financial instruments	3,770	1,070	1,969
Nonrecurring Basis [Member] | Goodwill [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Losses, non-financial instruments		3,900	42,216
Nonrecurring Basis [Member] | Other intangible assets, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Losses, non-financial instruments			248
Nonrecurring Basis [Member] | Investment in affiliates, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Losses, non-financial instruments		360
Nonrecurring Basis [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets of discontinued operations			0
Property and equipment, net	0	0	0
Goodwill		0	0
Other intangible assets, net			0
Investment in affiliates, net		0
Non-financial instruments		0	0
Nonrecurring Basis [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets of discontinued operations			0
Property and equipment, net	0	0	0
Goodwill		0	0
Other intangible assets, net			0
Investment in affiliates, net		0
Non-financial instruments		0	0
Nonrecurring Basis [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets of discontinued operations			19,961
Property and equipment, net	$ 0	0	0
Goodwill		0	77,616
Other intangible assets, net			0
Investment in affiliates, net		0
Non-financial instruments		$ 0	$ 97,577