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Commitments, Contingencies and Off-Balance Sheet Arrangements - Contractual Obligations (Detail) $ in Millions	Jun. 30, 2019 USD ($)
Note Purchase Agreements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	$ 50.0
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, 2023	300.0
Contractual Obligations, Payments Due by Period, Thereafter	3,198.0
Contractual Obligations, Payments Due by Period, Total	3,923.0
Multi Currency Credit Agreement [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	325.0
Contractual Obligations, Payments Due by Period, Total	325.0
Premium Financing Debt Facility [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	137.3
Contractual Obligations, Payments Due by Period, Total	137.3
Interest On Debt [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	87.5
Contractual Obligations, Payments Due by Period, 2020	171.0
Contractual Obligations, Payments Due by Period, 2021	165.8
Contractual Obligations, Payments Due by Period, 2022	160.1
Contractual Obligations, Payments Due by Period, 2023	150.6
Contractual Obligations, Payments Due by Period, Thereafter	698.9
Contractual Obligations, Payments Due by Period, Total	1,433.9
Total Debt Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	599.8
Contractual Obligations, Payments Due by Period, 2020	271.0
Contractual Obligations, Payments Due by Period, 2021	240.8
Contractual Obligations, Payments Due by Period, 2022	360.1
Contractual Obligations, Payments Due by Period, 2023	450.6
Contractual Obligations, Payments Due by Period, Thereafter	3,896.9
Contractual Obligations, Payments Due by Period, Total	5,819.2
Operating Lease Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	48.5
Contractual Obligations, Payments Due by Period, 2020	100.3
Contractual Obligations, Payments Due by Period, 2021	85.2
Contractual Obligations, Payments Due by Period, 2022	66.4
Contractual Obligations, Payments Due by Period, 2023	51.3
Contractual Obligations, Payments Due by Period, Thereafter	100.0
Contractual Obligations, Payments Due by Period, Total	451.7
Less Sublease Arrangements [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	(1.0)
Contractual Obligations, Payments Due by Period, 2020	(0.8)
Contractual Obligations, Payments Due by Period, 2021	(0.8)
Contractual Obligations, Payments Due by Period, 2022	(0.3)
Contractual Obligations, Payments Due by Period, 2023	(0.2)
Contractual Obligations, Payments Due by Period, Thereafter	(0.9)
Contractual Obligations, Payments Due by Period, Total	(4.0)
Outstanding Purchase Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	34.7
Contractual Obligations, Payments Due by Period, 2020	41.7
Contractual Obligations, Payments Due by Period, 2021	34.1
Contractual Obligations, Payments Due by Period, 2022	16.8
Contractual Obligations, Payments Due by Period, 2023	8.0
Contractual Obligations, Payments Due by Period, Thereafter	23.1
Contractual Obligations, Payments Due by Period, Total	158.4
Total Contractual Obligations [Member]
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]
Contractual Obligations, Payments Due by Period, 2019	682.0
Contractual Obligations, Payments Due by Period, 2020	412.2
Contractual Obligations, Payments Due by Period, 2021	359.3
Contractual Obligations, Payments Due by Period, 2022	443.0
Contractual Obligations, Payments Due by Period, 2023	509.7
Contractual Obligations, Payments Due by Period, Thereafter	4,019.1
Contractual Obligations, Payments Due by Period, Total	$ 6,425.3

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- Definition

Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]

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Amount of the recorded obligation, sublease agreement, 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

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Amount of the recorded unconditional purchase obligation sublease 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.

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Amount of the recorded unconditional purchase obligation sublease 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.

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Amount of the recorded unconditional purchase obligation sublease 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.

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Amount of the recorded unconditional purchase obligation sublease maturing in the remainder 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.

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Amount of the recorded unconditional purchase obligation, sublease 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

No definition available.

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Amount of the recorded unconditional purchase obligation, sublease 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.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
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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.

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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.

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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.

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