Segment Data (Tables)	12 Months Ended
Dec. 31, 2021
Segment Data [Abstract]
Schedule of Segment Reporting Information	Domestic Site Int'l Site Site Leasing Leasing Development Other Total For the year ended December 31, 2021 (in thousands)Revenues $ 1,681,372 $ 422,715 $ 204,747 $ — $ 2,308,834 Cost of revenues (1) 258,612 127,779 159,093 — 545,484 Operating profit 1,422,760 294,936 45,654 — 1,763,350 Selling, general, and administrative expenses 115,458 37,768 20,636 46,167 220,029 Acquisition and new business initiatives related adjustments and expenses 14,452 13,169 — — 27,621 Asset impairment and decommission costs 20,135 12,763 — 146 33,044 Depreciation, amortization and accretion 514,234 177,059 2,295 6,573 700,161 Operating income (loss) 758,481 54,177 22,723 (52,886) 782,495 Other expense (principally interest expense and other expense) (529,931) (529,931)Income before income taxes 252,564 Cash capital expenditures (2) 1,249,075 135,591 2,563 6,269 1,393,498 For the year ended December 31, 2020 Revenues $ 1,558,311 $ 396,161 $ 128,666 $ — $ 2,083,138 Cost of revenues (1) 256,673 117,105 102,750 — 476,528 Operating profit 1,301,638 279,056 25,916 — 1,606,610 Selling, general, and administrative expenses 102,889 34,905 17,663 38,810 194,267 Acquisition and new business initiatives related adjustments and expenses 10,331 6,251 — — 16,582 Asset impairment and decommission costs 28,887 11,210 — — 40,097 Depreciation, amortization and accretion 539,399 174,073 2,356 6,142 721,970 Operating (loss) income 620,132 52,617 5,897 (44,952) 633,694 Other expense (principally interest expense and other expense) (651,443) (651,443)Loss before income taxes (17,749)Cash capital expenditures (2) 303,366 89,762 1,752 6,191 401,071 For the year ended December 31, 2019 Revenues $ 1,487,108 $ 373,750 $ 153,787 $ — $ 2,014,645 Cost of revenues (1) 258,413 115,538 119,080 — 493,031 Operating profit 1,228,695 258,212 34,707 — 1,521,614 Selling, general, and administrative expenses 99,707 32,411 21,525 39,074 192,717 Acquisition and new business initiatives related adjustments and expenses 7,933 7,295 — — 15,228 Asset impairment and decommission costs 24,202 8,899 2 — 33,103 Depreciation, amortization and accretion 527,718 161,183 2,341 5,836 697,078 Operating income (loss) 569,135 48,424 10,839 (44,910) 583,488 Other expense (principally interest expense and other expense) (396,599) (396,599)Income before income taxes 186,889 Cash capital expenditures (2) 287,793 635,728 3,900 4,271 931,692 Domestic Site Int'l Site Site Leasing Leasing Development Other (3) Total Assets (in thousands)As of December 31, 2021 $ 6,628,156 $ 2,870,503 $ 87,410 $ 215,630 $ 9,801,699 As of December 31, 2020 $ 5,893,636 $ 2,955,563 $ 61,729 $ 247,090 $ 9,158,018 (1)Excludes depreciation, amortization, and accretion.(2)Includes cash paid for capital expenditures, acquisitions, and right-of-use assets.(3)Assets in Other consist primarily of general corporate assets and short-term investments.

Segment Data (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Segment Reporting Information

Domestic Site Int'l Site Site Leasing Leasing Development Other Total For the year ended December 31, 2021 (in thousands)Revenues $ 1,681,372 $ 422,715 $ 204,747 $ — $ 2,308,834 Cost of revenues (1) 258,612 127,779 159,093 — 545,484 Operating profit 1,422,760 294,936 45,654 — 1,763,350 Selling, general, and administrative expenses 115,458 37,768 20,636 46,167 220,029 Acquisition and new business initiatives related adjustments and expenses 14,452 13,169 — — 27,621 Asset impairment and decommission costs 20,135 12,763 — 146 33,044 Depreciation, amortization and accretion 514,234 177,059 2,295 6,573 700,161 Operating income (loss) 758,481 54,177 22,723 (52,886) 782,495 Other expense (principally interest expense and other expense) (529,931) (529,931)Income before income taxes 252,564 Cash capital expenditures (2) 1,249,075 135,591 2,563 6,269 1,393,498 For the year ended December 31, 2020 Revenues $ 1,558,311 $ 396,161 $ 128,666 $ — $ 2,083,138 Cost of revenues (1) 256,673 117,105 102,750 — 476,528 Operating profit 1,301,638 279,056 25,916 — 1,606,610 Selling, general, and administrative expenses 102,889 34,905 17,663 38,810 194,267 Acquisition and new business initiatives related adjustments and expenses 10,331 6,251 — — 16,582 Asset impairment and decommission costs 28,887 11,210 — — 40,097 Depreciation, amortization and accretion 539,399 174,073 2,356 6,142 721,970 Operating (loss) income 620,132 52,617 5,897 (44,952) 633,694 Other expense (principally interest expense and other expense) (651,443) (651,443)Loss before income taxes (17,749)Cash capital expenditures (2) 303,366 89,762 1,752 6,191 401,071 For the year ended December 31, 2019 Revenues $ 1,487,108 $ 373,750 $ 153,787 $ — $ 2,014,645 Cost of revenues (1) 258,413 115,538 119,080 — 493,031 Operating profit 1,228,695 258,212 34,707 — 1,521,614 Selling, general, and administrative expenses 99,707 32,411 21,525 39,074 192,717 Acquisition and new business initiatives related adjustments and expenses 7,933 7,295 — — 15,228 Asset impairment and decommission costs 24,202 8,899 2 — 33,103 Depreciation, amortization and accretion 527,718 161,183 2,341 5,836 697,078 Operating income (loss) 569,135 48,424 10,839 (44,910) 583,488 Other expense (principally interest expense and other expense) (396,599) (396,599)Income before income taxes 186,889 Cash capital expenditures (2) 287,793 635,728 3,900 4,271 931,692 Domestic Site Int'l Site Site Leasing Leasing Development Other (3) Total Assets (in thousands)As of December 31, 2021 $ 6,628,156 $ 2,870,503 $ 87,410 $ 215,630 $ 9,801,699 As of December 31, 2020 $ 5,893,636 $ 2,955,563 $ 61,729 $ 247,090 $ 9,158,018 (1)Excludes depreciation, amortization, and accretion.(2)Includes cash paid for capital expenditures, acquisitions, and right-of-use assets.(3)Assets in Other consist primarily of general corporate assets and short-term investments.