Basis of Presentation and Significant Accounting Policies - Effects of Adopting Topic 842 (Details) - USD ($)	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Assets
Other current assets	$ 251,451,000	$ 258,908,000	$ 274,857,000
Property, plant and equipment, net	10,992,740,000	10,732,909,000	11,026,020,000
Operating lease right-of-use assets	1,468,378,000	1,468,762,000	0
Intangible assets, net	2,204,405,000	2,310,091,000	2,333,296,000
Other assets	463,601,000	469,784,000	533,252,000
Liabilities
Current portion of operating lease liabilities	140,733,000	144,405,000	0
Current portion of finance lease liabilities	61,094,000	70,795,000	0
Current portion of capital lease and other financing obligations		0	77,844,000
Other current liabilities	142,461,000	120,540,000	126,995,000
Operating lease liabilities, less current portion	1,324,527,000	1,312,262,000	0
Finance lease liabilities, less current portion	1,140,676,000	1,165,188,000	0
Capital lease and other financing obligations, less current portion		0	1,441,077,000
Other liabilities	560,650,000	541,491,000	629,763,000
Equity
Retained earnings	$ 1,145,580,000	883,975,000	$ 889,948,000
Topic 842
Assets
Other current assets		(15,949,000)
Property, plant and equipment, net		(293,111,000)
Operating lease right-of-use assets		1,468,762,000
Intangible assets, net		(23,205,000)
Other assets		(63,468,000)
Liabilities
Current portion of operating lease liabilities		144,405,000
Current portion of finance lease liabilities		70,795,000
Current portion of capital lease and other financing obligations		(77,844,000)
Other current liabilities		(6,455,000)
Operating lease liabilities, less current portion		1,312,262,000
Finance lease liabilities, less current portion		1,165,188,000
Capital lease and other financing obligations, less current portion		(1,441,077,000)
Other liabilities		(88,272,000)
Equity
Retained earnings		$ (5,973,000)