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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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-Paragraph 2
-Subparagraph (a)
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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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No definition available.

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Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

+ References

No definition available.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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- Definition

Maturity date of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of gain (loss) recognized in income from asset and liability measured at fair value on recurring basis using unobservable input (level 3).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

No definition available.

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Fair value of financial and nonfinancial obligations.

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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-Paragraph 10A
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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

+ References

No definition available.

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Financial Instruments Measured At Fair Value, on Recurring Basis (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swaps	$ 95.9		$ 46.6
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	0.0
Investments, Fair Value Disclosure [Abstract]
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	0.0	$ 0.0
Available-for-sale Securities, Gross Realized Gain (Loss)	$ 0.0	0.0
Level 2 \| Minimum [Member]
Investments, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale, Maturity Date	Jan. 01, 2027
Level 2 \| Maximum [Member]
Investments, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale, Maturity Date	Dec. 31, 2033
Level 3
Contingent Consideration [Abstract]
Contingent Consideration, Maximum Payout	$ 7.5
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings	(0.3)	$ (0.9)
Fair Value, Recurring
Assets, Fair Value Disclosure [Abstract]
Available-for-sale debt securities	2.8
Total	2.8
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swaps	95.9
Contingent consideration	7.5
Total	103.4
Fair Value, Recurring \| Level 1
Assets, Fair Value Disclosure [Abstract]
Available-for-sale debt securities	0.0
Total	0.0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swaps	0.0
Contingent consideration	0.0
Total	0.0
Fair Value, Recurring \| Level 2
Assets, Fair Value Disclosure [Abstract]
Available-for-sale debt securities	2.8
Total	2.8
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swaps	95.9
Contingent consideration	0.0
Total	95.9
Fair Value, Recurring \| Level 3
Assets, Fair Value Disclosure [Abstract]
Available-for-sale debt securities	0.0
Total	0.0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swaps	0.0
Contingent consideration	7.5
Total	$ 7.5