Goodwill and Identifiable Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Identifiable intangible assets
Gross Carrying Amount	$ 331.2	$ 310.5
Accumulated Amortization	152.2	124.8
Net	179.0	185.7
Total intangible assets, Gross carrying value	363.1	342.4
Total intangible assets, Net carrying value	210.9	217.6
Intangible amortization expense	28.3	29.1	$ 22.4
Future estimated amortization of identifiable intangible assets
2016	32.3
2017	27.5
2018	23.8
2019	19.6
2020	16.8
Thereafter	59.0
Land Segment
Identifiable intangible assets
Total intangible assets, Net carrying value	140.2	137.5
Aviation Segment
Identifiable intangible assets
Total intangible assets, Net carrying value	64.7	72.9
Trademark/trade name rights
Identifiable intangible assets
Indefinite lived Intangible Assets	31.9	31.9
Customer relationships
Identifiable intangible assets
Gross Carrying Amount	255.5	243.1
Accumulated Amortization	125.4	104.4
Net	130.1	138.7
Supplier agreements
Identifiable intangible assets
Gross Carrying Amount	38.5	33.7
Accumulated Amortization	10.7	9.1
Net	27.8	24.6
Other
Identifiable intangible assets
Gross Carrying Amount	37.2	33.7
Accumulated Amortization	16.1	11.3
Net	$ 21.1	$ 22.4