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Leases (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Dec. 31, 2018
Leases [Abstract] |  |  |
Minimum Remaining Lease Term |  | 1 year |
Remaining lease terms |  | 20 years |
Lessee, Operating Lease, Description [Abstract] |  |  |
Operating lease cost | $ 80.9 | $ 240.3 |
Short-term lease cost | 3.1 | 13.1 |
Sublease income | 3.8 | 8.6 |
Total lease cost | $ 80.2 | 244.8 |
Cash paid for amounts included in the measurement of lease liabilities |  | 247.2 |
Right-of-use assets obtained in exchange for lease liabilities |  | $ 359.0 |
Weighted-average remaining lease term | 8 years | 8 years |
Weighted-average discount rate | 4.32% | 4.32% |
Future Lease Payments [Abstract] |  |  |
2019 | $ 83.6 | $ 83.6 |
2020 | 322.9 | 322.9 |
2021 | 291.5 | 291.5 |
2022 | 260.5 | 260.5 |
2023 | 202.3 | 202.3 |
Thereafter | 861.2 | 861.2 |
Total future lease payments | 2,022.0 | 2,022.0 |
Less: imputed interest | 326.0 | 326.0 |
Present value of future lease payments | 1,696.0 | 1,696.0 |
Less: current portion of operating leases | 261.6 | 261.6 | $ 0.0
Non-current operating leases | 1,434.4 | 1,434.4 | 0.0
Future Lease Payments as of Prior Year End [Abstract] |  |  |
Rent Obligations 2019 |  |  | 352.0
Sublease Rental Income 2019 |  |  | 7.7
Net Rent 2019 |  |  | 344.3
Rent Obligations 2020 |  |  | 324.3
Sublease Rental Income 2020 |  |  | 5.2
Net Rent 2020 |  |  | 319.1
Rent Obligations 2021 |  |  | 282.3
Sublease Rental Income 2021 |  |  | 2.2
Net Rent 2021 |  |  | 280.1
Rent Obligations 2022 |  |  | 242.5
Sublease Rental Income 2022 |  |  | 1.3
Net Rent 2022 |  |  | 241.2
Rent Obligations 2023 |  |  | 184.0
Sublease Rental Income 2023 |  |  | 0.6
Net Rent 2023 |  |  | 183.4
Rent Obligations Thereafter |  |  | 714.6
Sublease Rental Income Thereafter |  |  | 0.5
Net Rent Thereafter |  |  | 714.1
Rent Obligations |  |  | 2,099.7
Sublease Rental Income |  |  | 17.5
Net Rent |  |  | $ 2,082.2
Lessee, Operating Lease, Not yet Commenced, Description [Abstract] |  |  |
Future lease payments for additional operating leases that have not yet commenced | $ 151.0 | $ 151.0 |
Minimum Lease Term for Leases That Have Not Yet Commenced |  | 4 years |
Maximum Lease Term for Leases That Have Not Yet Commenced |  | 15 years |

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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of short-term lease cost, excluding expense for lease with term of one month or less. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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- Definition Amount of sublease income excluding finance and operating lease expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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