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Intangible Assets (Tables)
 3 Months Ended
Feb. 29, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill

The following table presents details of our intangible assets, other than goodwill, as of February 29, 2020 and November 30, 2019 (in millions): 
 
As of February 29, 2020
 
As of November 30, 2019
 
Gross
 
Accumulated
Amortization
 
Net
 
Gross
 
Accumulated
Amortization
 
Net
Intangible assets subject to amortization:
 
 
 
 
 
 
 
 
 
 
 
Customer relationships
$
3,465.3

 
$
(671.9
)
 
$
2,793.4

 
$
3,476.1

 
$
(628.7
)
 
$
2,847.4

Developed technology
946.7

 
(227.5
)
 
719.2

 
949.6

 
(208.9
)
 
740.7

Information databases
590.9

 
(324.1
)
 
266.8

 
591.6

 
(310.9
)
 
280.7

Trademarks
486.8

 
(216.7
)
 
270.1

 
487.0

 
(203.0
)
 
284.0

Developed computer software
76.1

 
(64.7
)
 
11.4

 
76.3

 
(62.9
)
 
13.4

Other
4.1

 
(1.5
)
 
2.6

 
4.1

 
(1.3
)
 
2.8

Total intangible assets
$
5,569.9

 
$
(1,506.4
)
 
$
4,063.5

 
$
5,584.7

 
$
(1,415.7
)
 
$
4,169.0
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense The following table presents the estimated future amortization expense related to intangible assets held as of February 29, 2020 (in millions):
Year
 
Amount
Remainder of 2020
 
$
279.7

2021
 
$
368.7

2022
 
$
351.7

2023
 
$
339.5

2024
 
$
320.8

Thereafter
 
$
2,403.1