CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
REVENUES:
Total operating revenues	$ 1,993.1	$ 1,813.4
Costs of operations (exclusive of items shown separately below):
Property	544.1	533.0
Services	7.9	10.4
Depreciation, amortization and accretion	472.3	436.9
Selling, general, administrative and development expense	217.8	198.1
Other operating expenses	14.2	20.1
Total operating expenses	1,256.3	1,198.5
OPERATING INCOME	736.8	614.9
OTHER INCOME (EXPENSE):
Interest income	10.1	12.4
Interest expense	(208.8)	(207.5)
Loss on retirement of long-term obligations	(34.6)	(0.1)
Other (expense) income (including foreign currency (losses) gains of $(65.5) and $20.1, respectively)	(63.8)	21.9
Total other expense	(297.1)	(173.3)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	439.7	441.6
Income tax provision	(21.1)	(34.0)
NET INCOME	418.6	407.6
Net income attributable to noncontrolling interests	(3.6)	(10.2)
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	415.0	397.4
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	$ 415.0	$ 397.4
NET INCOME PER COMMON SHARE AMOUNTS:
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	$ 0.94	$ 0.90
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	$ 0.93	$ 0.89
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in thousands):
BASIC (in shares)	443,055	441,351
DILUTED (in shares)	445,832	444,621
Property
REVENUES:
Total operating revenues	$ 1,973.2	$ 1,786.0
Services revenue
REVENUES:
Total operating revenues	$ 19.9	$ 27.4