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Fair Value Measurements
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements:
Our financial assets and liabilities that are measured at fair value on a recurring basis are as follows (in millions):
  Fair Value Measurements at Reporting Date Using
As of December 31, 2022Fair ValueQuoted Prices in Active Markets for Identical Assets
(Level 1)
Significant Other Observable Inputs
(Level 2)
Significant Unobservable Inputs
(Level 3)
Valuation Technique (1)
Equity securities(2)
$110.0 $3.7 $106.3 $— M
Redeemable noncontrolling interests35.6 — — 35.6 I
As of December 31, 2021     
Equity securities(2)
$82.2 $4.1 $78.1 $— M
Redeemable noncontrolling interests42.2 — — 42.2 I
(1)The three valuation techniques are: market approach (M), cost approach (C), and income approach (I).
(2)As of December 31, 2022, $30.9 million are included in Other current assets and $79.1 million are included in Other long-term assets in the consolidated balance sheet. As of December 31, 2021, $82.2 million are included in Other long-term assets in the consolidated balance sheet.
There are assets and liabilities that are not required to be measured at fair value on a recurring basis. However, these assets may be recorded at fair value as a result of impairment charges or other adjustments made to the carrying value of the applicable assets. During the years ended December 31, 2022, 2021, and 2020, we did not record any material gains or losses related to these assets.
As discussed in Note 1, Summary of Significant Accounting Policies, “Fair Value Measurements,” the carrying value equals fair value for our financial instruments that are not included in the table below and are classified as current in our consolidated balance sheets. The carrying amounts and estimated fair values for our other financial instruments are presented in the following table (in millions):
 As of December 31, 2022As of December 31, 2021
 Carrying AmountEstimated Fair ValueCarrying AmountEstimated Fair Value
Long-term debt:    
Advances under revolving credit facility$55.0 $55.0 $200.0 $200.0 
Term loan facilities— — 238.5 239.6 
5.125% Senior Notes due 2023
— — 99.6 100.2 
5.75% Senior Notes due 2025
347.7 347.7 347.0 357.9 
4.50% Senior Notes due 2028
781.8 726.7 786.8 823.0 
4.75% Senior Notes due 2030
779.0 703.7 784.7 824.0 
4.625% Senior Notes due 2031
390.6 342.2 393.7 407.0 
Other notes payable53.1 53.1 47.7 47.7 
Financial commitments:    
Letters of credit— 32.7 — 38.2 
Fair values for our long-term debt and financial commitments are determined using inputs, including quoted prices in nonactive markets, that are observable either directly or indirectly, or Level 2 inputs within the fair value hierarchy. See Note 1, Summary of Significant Accounting Policies, “Fair Value Measurements” and “Redeemable Noncontrolling Interests.”