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Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule of Measurement Date, Net Book Value and Related Impairment Charges for Assets

For those assets and asset groups for which impairment was recorded, the fair value as of the measurement date, net book value as of December 31, 2022, 2021 and 2020, and the related impairment charges during the years ended December 31, 2022, 2021 and 2020, were as follows:

 

 

Year ended December 31, 2022

 

 

As of
December 31, 2022

 

 

 

 

As of Measurement Date

 

 

 

 

(millions)

Measurement Date

 

Impairment Charge

 

 

Fair Value Measurement (Level 3)

 

 

Net Book Value of Assets Assessed for Impairment

 

ROU assets

December 31, 2022

 

$

3.7

 

 

$

4.7

 

 

 

 

Total of ROU assets impaired

 

 

$

3.7

 

 

$

4.7

 

 

$

4.7

 

 

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31, 2021

 

 

As of
December 31, 2021

 

 

 

 

As of Measurement Date

 

 

 

 

(millions)

Measurement Date

 

Impairment Charge

 

 

Fair Value Measurement (Level 3)

 

 

Net Book Value of Assets Assessed for Impairment

 

ROU assets

March 31, 2021

 

$

0.1

 

 

$

 

 

 

 

ROU assets

September 30, 2021

 

 

3.5

 

 

 

2.0

 

 

 

 

Total of ROU assets impaired

 

 

$

3.6

 

 

$

2.0

 

 

$

1.9

 

 

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31, 2020

 

 

As of
December 31, 2020

 

 

 

 

As of Measurement Date

 

 

 

 

(millions)

Measurement Date

 

Impairment Charge

 

 

Fair Value Measurement (Level 3)

 

 

Net Book Value of Assets Assessed for Impairment

 

ROU assets

March 31, 2020

 

$

77.5

 

 

$

147.4

 

 

 

 

ROU assets

June 30, 2020

 

 

16.7

 

 

 

26.2

 

 

 

 

ROU assets

September 30, 2020

 

 

1.6

 

 

 

1.6

 

 

 

 

ROU assets

December 31, 2020

 

 

2.9

 

 

 

5.0

 

 

 

 

Total of ROU assets impaired

 

 

$

98.7

 

 

$

180.2

 

 

$

121.4

 

Goodwill - Aviation reporting unit

August 31, 2020

 

$

59.5

 

 

$

149.5

 

 

$

149.5

 

Proprietary know how

June 30, 2020

 

 

3.7

 

 

 

3.9

 

 

 

 

Customer relationships

August 31, 2020

 

 

69.2

 

 

 

4.6

 

 

 

 

Trade names and trademarks

August 31, 2020

 

 

2.9

 

 

 

0.5

 

 

 

 

Total Other intangible assets, net

 

 

$

75.8

 

 

$

9.0

 

 

$

8.3