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Equity Method Investment - Number Of Displays

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Equity Method Investment, Number of Investments

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Number Of Payments To Acquire Investments

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Software License Contract Term

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The amount of expense in the period for communications and data processing expense.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Date when investment is acquired, in YYYY-MM-DD format.

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Cost of the investment.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Indicates line item in statement of financial position that includes current operating lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Indicates line item in statement of financial position that includes noncurrent operating lease liability.

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Amount of lessee's right to use underlying asset under operating lease.

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Indicates line item in statement of financial position that includes operating lease right-of-use asset.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Related Party Transactions - Narrative (Details) $ in Millions			3 Months Ended		6 Months Ended		12 Months Ended	36 Months Ended
	May 26, 2026 USD ($)	Feb. 17, 2026 USD ($)	Jun. 30, 2026 USD ($) joint_venture Displays	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) joint_venture Displays	Jun. 30, 2025 USD ($)	Dec. 31, 2026 USD ($)	Feb. 16, 2029 USD ($) numberOfPayments	Feb. 16, 2029	Jan. 18, 2033 USD ($)	Dec. 31, 2025 USD ($)	Jan. 18, 2023 USD ($)
Related Party Transaction [Line Items]
Operating lease assets			$ 1,573.5		$ 1,573.5						$ 1,521.5
Short-term operating lease liabilities			178.7		178.7						172.9
Operating lease liabilities			1,424.4		1,424.4						1,374.7
Billboard Revenue			379.4	$ 351.3	712.3	$ 662.0
Revenues			522.5	460.2	952.1	850.9
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent
Related Party Transaction [Line Items]
Equity method investments			8.6		8.6						$ 9.0
Management Service
Related Party Transaction [Line Items]
Revenues			0.9	0.7	1.5	1.3
AdQuick Agreement [Member]
Related Party Transaction [Line Items]
Investment, Acquisition Date		Feb. 17, 2026
Payments to Acquire Investments	$ 4.0	$ 4.0
Investment Owned, Cost		$ 20.0
Subsequent event \| AdQuick Agreement [Member]
Related Party Transaction [Line Items]
Payments to Acquire Investments								$ 4.0
Software License Contract Term									3 years
License fee							$ 17.0
Number Of Payments To Acquire Investments \| numberOfPayments								4
Income Statement Location [Axis]: us-gaap:DirectOperatingCosts
Related Party Transaction [Line Items]
Operating lease expenses			117.0	111.3	228.4	220.7
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Related Party Transaction [Line Items]
Operating lease expenses			3.2	3.1	6.4	6.0
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense \| AdQuick Agreement [Member]
Related Party Transaction [Line Items]
License fee			$ 4.3		$ 6.3
LA Joint Venture
Related Party Transaction [Line Items]
Equity method investment, ownership percentage			50.00%		50.00%
2 Times Square And 1600 Broadway \| Minimum
Related Party Transaction [Line Items]
Lessee, Operating Lease, Liability to be Paid Annually												$ 1.8
2 Times Square And 1600 Broadway \| Maximum \| Forecast
Related Party Transaction [Line Items]
Lessee, Operating Lease, Liability to be Paid Annually										$ 3.5
Beneficial Owner
Related Party Transaction [Line Items]
Operating lease term (lessee)												10 years
Lessee, Operating Lease, Liability to be Paid Annually Years One Through Five												$ 8.5
Lessee, Operating Lease, Liability To Be Paid Annually, Years Six Through Ten												12.0
Lessee, Operating Lease, Liability To Be Paid, Year Five												10.0
Operating lease assets			$ 72.7		$ 72.7
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]			Operating lease assets		Operating lease assets
Short-term operating lease liabilities			$ 6.3		$ 6.3
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]			Short-term operating lease liabilities		Short-term operating lease liabilities
Operating lease liabilities			$ 79.7		$ 79.7
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]			Operating lease liabilities		Operating lease liabilities
Beneficial Owner \| Minimum
Related Party Transaction [Line Items]
Total operating lease payments												22.0
Beneficial Owner \| Maximum
Related Party Transaction [Line Items]
Total operating lease payments												$ 100.0
Beneficial Owner \| Income Statement Location [Axis]: us-gaap:DirectOperatingCosts
Related Party Transaction [Line Items]
Operating lease expenses			$ 2.7	2.9	$ 5.5	5.9
Beneficial Owner \| Income Statement Location [Axis]: us-gaap:Revenues
Related Party Transaction [Line Items]
Billboard Revenue			$ 2.5	$ 3.1	$ 4.8	$ 6.1
Transit shelter joint ventures
Related Party Transaction [Line Items]
Equity method investment, number of investments \| joint_venture			1		1
Acquired businesses
Related Party Transaction [Line Items]
Equity method investment, number of investments \| joint_venture			2		2
Equity method investment, number of displays \| Displays			9		9