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Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
2020	$ 430.3
2021	377.1
2022	315.4
2023	248.5
2024	187.9
Thereafter	401.9
Total lease payments	1,961.1
Amount representing interest	(218.8)
Present value of operating lease liabilities	1,742.3
Proceeds from real estate financing transactions	7.2	$ 225.3
Transactions related to future obligations	$ 212.4

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Proceeds From Real Estate Financing

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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

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