Debt (Schedule of Cash and Non-Cash Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Cash Interest	$ 84,315	$ 90,544	$ 166,566	$ 180,639
Non-cash Interest	$ 11,529	11,812	$ 23,054	23,615
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.05%		3.05%
Cash Interest	$ 3,603	1,573	$ 5,882	3,721
2018 Term Loan [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.111%		2.111%
Cash Interest	$ 11,616	11,067	$ 22,527	22,064
Non-cash Interest	$ 11,440	11,438	$ 22,879	22,872
Blended rate			2.111%
Accruing interest rate	3.42%		3.42%
2013 Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.722%		3.722%
Cash Interest		5,396		10,792
2014 Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.869%		3.869%
Cash Interest	$ 6,046	6,046	$ 12,092	12,092
2017-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.168%		3.168%
Cash Interest		3,115		9,201
2018-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.448%		3.448%
Cash Interest	$ 5,570	5,570	$ 11,141	11,141
2019-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.836%		2.836%
Cash Interest	$ 8,357	8,357	$ 16,714	16,714
2020-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.884%		1.884%
Cash Interest	$ 3,598	3,598	$ 7,195	7,195
2020-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.328%		2.328%
Cash Interest	$ 3,540	3,540	$ 7,079	7,079
2021-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.631%		1.631%
Cash Interest	$ 4,851	2,550	$ 9,697	2,550
2021-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.84%		1.84%
Cash Interest	$ 4,196		$ 8,391
2021-3C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.593%		2.593%
Cash Interest	$ 5,873		$ 11,746
2016 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	4.875%		4.875%
Cash Interest		13,406		26,813
Non-cash Interest		289		575
2017 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	4.00%		4.00%
Cash Interest				2,333
2020 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.875%		3.875%
Cash Interest	$ 14,531	14,531	$ 29,063	29,063
Non-cash Interest	$ 89	85	$ 175	168
2021 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.125%		3.125%
Cash Interest	$ 11,719	11,719	$ 23,438	19,792
Other [Member]
Debt Instrument [Line Items]
Cash Interest	815	$ 76	1,601	$ 89
Interest Rate Swap [Member] | 2018 Term Loan [Member]
Debt Instrument [Line Items]
Notional amount	$ 1,950,000		$ 1,950,000
Derivative fixed interest rate	1.874%		1.874%
Interest Rate Swap [Member] | London Interbank Offered Rate (LIBOR) [Member] | 2018 Term Loan [Member]
Debt Instrument [Line Items]
Derivative basis spread on variable interest rate	1.75%		1.75%