Income Taxes - Reorganization Transactions - (Details) - Reorganization Transactions on April 1, 2016 - USD ($) $ in Millions		12 Months Ended
Apr. 01, 2016	Dec. 31, 2016	Jun. 30, 2018
Income taxes
Current tax receivables recorded			$ 93.9
Unrecognized tax positions			116.5
Indemnification receivable			$ 22.6
Certain tax related liabilities incurred	$ 95.4
Expected federal tax benefit on distribution taxes	33.4
Total state and local distribution taxes reported		$ 92.1
Net adjustments to pre-Reorganization indemnification receivables or payables and unrecognized tax benefits	$ 2.1

Amount of current and deferred federal income tax expense (benefit) attributable to distribution taxes.

No definition available.

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- Definition

The reported amount of obligation for state and local distribution taxes of a prior period tax return.

+ References

No definition available.

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- Definition

The estimated amount of indemnification receivable recognized for income tax contingencies attributable to transactions prior to change in reporting entity.

+ References

No definition available.

+ Details

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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.

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No definition available.

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- Definition

The net amount of increase (decrease) in the estimated amount of indemnification liability (receivable) recognized for income tax contingencies attributable to transactions prior to change in reporting entity and unrecognized tax benefits attributable to change in reporting entity, including transactions prior to change in reporting entity and related reorganization transactions.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits attributable to change in reporting entity, including related reorganization transactions.

+ References

No definition available.

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- Definition

Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.5(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(a)(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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