Debt (Schedule of Cash and Non-Cash Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Cash Interest	$ 82,252	$ 90,095
Non-cash Interest	$ 11,526	11,804
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.619%
Cash Interest	$ 2,279	2,148
2018 Term Loan [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.926%
Cash Interest	$ 10,910	10,997
Non-cash Interest	$ 11,438	11,434
Blended rate	1.926%
Accruing interest rate	2.21%
2013-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.722%
Cash Interest		5,396
2014-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.869%
Cash Interest	$ 6,046	6,046
2017-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.168%
Cash Interest		6,085
2018-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.448%
Cash Interest	$ 5,570	5,570
2019-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.836%
Cash Interest	$ 8,357	8,357
2020-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.884%
Cash Interest	$ 3,598	3,598
2020-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.328%
Cash Interest	$ 3,540	3,540
2021-1C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.631%
Cash Interest	$ 4,846
2021-2C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	1.84%
Cash Interest	$ 4,196
2021-3C Tower Securities [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	2.593%
Cash Interest	$ 5,873
2016 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	4.875%
Cash Interest		13,406
Non-cash Interest		286
2017 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	4.00%
Cash Interest		2,333
2020 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.875%
Cash Interest	$ 14,531	14,531
Non-cash Interest	$ 88	84
2021 Senior Notes [Member]
Debt Instrument [Line Items]
Interest Rates as of March 31, 2022	3.125%
Cash Interest	$ 11,719	8,073
Other [Member]
Debt Instrument [Line Items]
Cash Interest	787	$ 15
Interest Rate Swap [Member] | 2018 Term Loan [Member]
Debt Instrument [Line Items]
Notional amount	$ 1,950,000
Derivative fixed interest rate	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%