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Acquisitions, Assets and Liabilities Held for Sale (Details) $ in Millions |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 23, 2016 USD ($) | May 01, 2016 USD ($) | Mar. 31, 2016 item | Jun. 30, 2016 USD ($) | Dec. 31, 2015 USD ($)
Acquisitions |  |  |  |  |  |
Previous percentage ownership of noncontrolling owners |  |  |  |  | 49.00% |
Capital in excess of par value | [1] |  |  |  | $ 411.0 | $ 435.3
2016 Acquisitions |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Number of airports to be acquired | item |  |  |  | 83 |  |
Tobras |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Estimated purchase price |  | $ 3.7 |  |  |  |
Previous percentage ownership of noncontrolling owners |  | 49.00% |  |  |  |
Previous percentage of ownership of parent |  | 51.00% |  |  |  |
Capital in excess of par value |  | $ 10.9 |  |  |  |
Cash paid for acquisition of business |  | 3.7 |  |  |  |
Increase in noncontrolling interest equity |  | $ 7.2 |  |  |  |
Land Segment | 2016 Acquisitions |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Number of businesses acquired | item |  |  |  | 3 |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Pester |  |  |  |  |  |
Assets and Liabilities Held for Sale |  |  |  |  |  |
Cash received for disposal of retail business |  |  | $ 32.3 |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Pester | Other (expense) income, net |  |  |  |  |  |
Assets and Liabilities Held for Sale |  |  |  |  |  |
Gain (Loss) on disposal of retail business |  |  | $ 3.8 |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Tobras |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Previous percentage ownership of noncontrolling owners |  | 49.00% |  |  |  |
[1] | Amounts may not add due to rounding

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