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Commitments, Contingencies and Off-Balance Sheet Arrangements - Contractual Obligations (Detail) $ in Millions | Dec. 31, 2017 USD ($)
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Note Purchase Agreements [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | $ 100.0
Contractual Obligations, Payments Due by Period, 2019 | 100.0
Contractual Obligations, Payments Due by Period, 2020 | 100.0
Contractual Obligations, Payments Due by Period, 2021 | 75.0
Contractual Obligations, Payments Due by Period, 2022 | 200.0
Contractual Obligations, Payments Due by Period, Thereafter | 2,223.0
Contractual Obligations, Payments Due by Period, Total | 2,798.0
Multi Currency Credit Agreement [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 190.0
Contractual Obligations, Payments Due by Period, Total | 190.0
Premium Financing Debt Facility [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 151.1
Contractual Obligations, Payments Due by Period, Total | 151.1
Interest On Debt [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 120.6
Contractual Obligations, Payments Due by Period, 2019 | 115.1
Contractual Obligations, Payments Due by Period, 2020 | 110.7
Contractual Obligations, Payments Due by Period, 2021 | 105.7
Contractual Obligations, Payments Due by Period, 2022 | 100.5
Contractual Obligations, Payments Due by Period, Thereafter | 368.2
Contractual Obligations, Payments Due by Period, Total | 920.8
Total Debt Obligations [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 561.7
Contractual Obligations, Payments Due by Period, 2019 | 215.1
Contractual Obligations, Payments Due by Period, 2020 | 210.7
Contractual Obligations, Payments Due by Period, 2021 | 180.7
Contractual Obligations, Payments Due by Period, 2022 | 300.5
Contractual Obligations, Payments Due by Period, Thereafter | 2,591.2
Contractual Obligations, Payments Due by Period, Total | 4,059.9
Operating Lease Obligations [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 103.2
Contractual Obligations, Payments Due by Period, 2019 | 88.5
Contractual Obligations, Payments Due by Period, 2020 | 74.3
Contractual Obligations, Payments Due by Period, 2021 | 62.5
Contractual Obligations, Payments Due by Period, 2022 | 47.2
Contractual Obligations, Payments Due by Period, Thereafter | 104.5
Contractual Obligations, Payments Due by Period, Total | 480.2
Less Sublease Arrangements [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | (0.7)
Contractual Obligations, Payments Due by Period, 2019 | (0.4)
Contractual Obligations, Payments Due by Period, 2020 | (0.4)
Contractual Obligations, Payments Due by Period, 2021 | (0.4)
Contractual Obligations, Payments Due by Period, 2022 | (0.2)
Contractual Obligations, Payments Due by Period, Total | (2.1)
Outstanding Purchase Obligations [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 42.9
Contractual Obligations, Payments Due by Period, 2019 | 19.5
Contractual Obligations, Payments Due by Period, 2020 | 8.3
Contractual Obligations, Payments Due by Period, 2021 | 2.2
Contractual Obligations, Payments Due by Period, 2022 | 2.0
Contractual Obligations, Payments Due by Period, Total | 74.9
Total Contractual Obligations [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Contractual Obligations, Payments Due by Period, 2018 | 707.1
Contractual Obligations, Payments Due by Period, 2019 | 322.7
Contractual Obligations, Payments Due by Period, 2020 | 292.9
Contractual Obligations, Payments Due by Period, 2021 | 245.0
Contractual Obligations, Payments Due by Period, 2022 | 349.5
Contractual Obligations, Payments Due by Period, Thereafter | 2,695.7
Contractual Obligations, Payments Due by Period, Total | $ 4,612.9

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- Definition Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] + References No definition available. + Details
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- Definition Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing in 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing in the fourth 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing in the second 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing in the third 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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- Definition Amount of the recorded unconditional purchase obligation maturing in the next 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308 + Details
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