Commitments, Contingencies and Off-Balance Sheet Arrangements - Contractual Obligations (Detail) $ in Millions	Jun. 30, 2020 USD ($)
Note Purchase Agreements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	$ 50.0
Contractual Obligations, Payments Due by Period, 2021	75.0
Contractual Obligations, Payments Due by Period, 2022	200.0
Contractual Obligations, Payments Due by Period, 2023	300.0
Contractual Obligations, Payments Due by Period, 2024	475.0
Contractual Obligations, Payments Due by Period, Thereafter	3,348.0
Contractual Obligations, Payments Due by Period, Total	4,448.0
Multi Currency Credit Agreement [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	100.0
Contractual Obligations, Payments Due by Period, Total	100.0
Premium Financing Debt Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	103.6
Contractual Obligations, Payments Due by Period, Total	103.6
Interest On Debt [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	97.7
Contractual Obligations, Payments Due by Period, 2021	190.8
Contractual Obligations, Payments Due by Period, 2022	185.1
Contractual Obligations, Payments Due by Period, 2023	175.8
Contractual Obligations, Payments Due by Period, 2024	158.0
Contractual Obligations, Payments Due by Period, Thereafter	745.3
Contractual Obligations, Payments Due by Period, Total	1,552.7
Total Debt Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	351.3
Contractual Obligations, Payments Due by Period, 2021	265.8
Contractual Obligations, Payments Due by Period, 2022	385.1
Contractual Obligations, Payments Due by Period, 2023	475.8
Contractual Obligations, Payments Due by Period, 2024	633.0
Contractual Obligations, Payments Due by Period, Thereafter	4,093.3
Contractual Obligations, Payments Due by Period, Total	6,204.3
Operating Lease Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	57.4
Contractual Obligations, Payments Due by Period, 2021	105.8
Contractual Obligations, Payments Due by Period, 2022	83.1
Contractual Obligations, Payments Due by Period, 2023	65.3
Contractual Obligations, Payments Due by Period, 2024	46.3
Contractual Obligations, Payments Due by Period, Thereafter	88.1
Contractual Obligations, Payments Due by Period, Total	446.0
Less Sublease Arrangements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Receivable by Period, 2020	(0.3)
Contractual Obligations, Payments Receivable by Period, 2021	(0.5)
Contractual Obligations, Payments Receivable by Period, 2022	(0.3)
Contractual Obligations, Payments Receivable by Period, 2023	(0.2)
Contractual Obligations, Payments Receivable by Period, 2024	(0.2)
Contractual Obligations, Payments Receivable by Period, Thereafter	(0.7)
Contractual Obligations, Payments Receivable by Period, Total	(2.2)
Outstanding Purchase Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	37.7
Contractual Obligations, Payments Due by Period, 2021	42.8
Contractual Obligations, Payments Due by Period, 2022	27.7
Contractual Obligations, Payments Due by Period, 2023	13.6
Contractual Obligations, Payments Due by Period, 2024	8.7
Contractual Obligations, Payments Due by Period, Thereafter	31.0
Contractual Obligations, Payments Due by Period, Total	161.5
Total Contractual Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2020	446.1
Contractual Obligations, Payments Due by Period, 2021	413.9
Contractual Obligations, Payments Due by Period, 2022	495.6
Contractual Obligations, Payments Due by Period, 2023	554.5
Contractual Obligations, Payments Due by Period, 2024	687.8
Contractual Obligations, Payments Due by Period, Thereafter	4,211.7
Contractual Obligations, Payments Due by Period, Total	$ 6,809.6

Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]

No definition available.

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- Definition

Recorded unconditional purchase obligation receivable.

+ References

No definition available.

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- Definition

Recorded unconditional purchase obligation receivable after fifth year.

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Recorded unconditional purchase obligation receivable in fifth year.

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- Definition

Recorded unconditional purchase obligation receivable in fourth year.

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- Definition

Recorded unconditional purchase obligation receivable in remainder of fiscal year.

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- Definition

Recorded unconditional purchase obligation receivable in second year.

+ References

No definition available.

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- Definition

Recorded unconditional purchase obligation receivable in third year.

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No definition available.

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25383-109308

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- Definition

Amount of recorded unconditional purchase obligation maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25383-109308

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- Definition

Amount of recorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of recorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of recorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ References

No definition available.

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- Definition

Amount of recorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of recorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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