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DEFERRED REVENUE
 12 Months Ended
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]  
DEFERRED REVENUE DEFERRED REVENUE

The total deferred revenue as of December 31, 2019 and 2018 was $333.5 million and $371.2 million, respectively, consisting of unamortized prepaid services, IRUs, and deferred non-recurring revenue. Deferred revenue is recognized as current and noncurrent deferred revenue on the consolidated balance sheets.

Significant changes in deferred revenue balances during the years ended December 31, 2019 and 2018 are as follows (amounts in millions):

 
Contract Term
 
 
 
Less than 1 Year
 
Greater than 1 Year
 
Total
Balance, December 31, 2017
$
18.6

 
$
130.3

 
$
148.9

Revenue recognized from beginning balance
(18.6
)
 
(21.7
)
 
(40.3
)
Increase in deferred revenue, net
28.9

 
15.9

 
44.8

Business combinations (gross)
0.4

 
242.6

 
243.0

Revenue recognized from business combinations
(0.4
)
 
(18.3
)
 
(18.7
)
Foreign currency translation adjustments
(0.2
)
 
(6.3
)
 
(6.5
)
Balance, December 31, 2018
28.7

 
342.5

 
371.2

Revenue recognized from beginning balance
(28.8
)
 
(53.5
)
 
(82.3
)
Increase in deferred revenue, net
21.7

 
26.4

 
48.1

Business combinations (gross)
—

 
1.2

 
1.2

Revenue recognized from business combinations
—

 
—

 
—

Foreign currency translation adjustments
0.9

 
(5.6
)
 
(4.7
)
Balance, December 31, 2019
$
22.5

 
$
311.0

 
$
333.5




Remaining amortization at December 31, 2019 and in each of the years subsequent to December 31, 2019 is as follows (amounts in millions):
 
Contract Term
 
 
 
Less than 1 Year
 
Greater than 1 Year
 
Total
2020
$
22.5

 
$
44.5

 
$
67.0

2021
—

 
38.9

 
38.9

2022
—

 
36.8

 
36.8

2023
—

 
35.0

 
35.0

2024
—

 
28.0

 
28.0

2025 and beyond
—

 
127.8

 
127.8

 
$
22.5

 
$
311.0

 
$
333.5