v3.26.3
Lease Accounting - Schedule of Aggregate Lease Costs by Lease Classification (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Lease Cost [Line Items]        
Total operating lease costs $ 93.8 $ 85.3 $ 269.6 $ 252.1
Total finance lease costs 5.0 5.2 15.1 15.8
Location, Statement of Income, Balance [Axis]: us-gaap:DepreciationDepletionAndAmortization        
Lease Cost [Line Items]        
Amortization of leased assets 3.6 3.6 10.8 10.8
Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseNonoperating        
Lease Cost [Line Items]        
Interest on lease liabilities 1.4 1.6 4.3 5.0
Equipment | Location, Statement of Income, Balance [Axis]: us-gaap:OtherCostAndExpenseOperating        
Lease Cost [Line Items]        
Total operating lease costs [1] 1.2 1.0 3.4 3.1
Real Estate | Location, Statement of Income, Balance [Axis]: cnk:FacilityLeaseExpense        
Lease Cost [Line Items]        
Total operating lease costs [1] $ 92.6 $ 84.3 $ 266.2 $ 249.0
[1] Includes short-term lease payments, variable lease payments and office and equipment lease payments as set forth in the following table for the periods presented:

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 30,

 

 

September 30,

 

Lease Cost

Classification

2026

 

 

2025

 

 

2026

 

 

2025

 

Operating lease costs

 

 

 

 

 

 

 

 

 

 

 

 

Equipment - Short-term and variable lease payments

Utilities and other

$

1.2

 

 

$

1.0

 

 

$

3.3

 

 

$

2.9

 

Real Estate - Variable lease payments (1)

Facility lease expense

$

22.4

 

 

$

15.6

 

 

$

56.2

 

 

$

45.1

 

Office and equipment leases

General and administrative

$

0.5

 

 

$

0.4

 

 

$

1.3

 

 

$

1.1