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Debt (Narrative - Senior Credit Facilities) (Details) - USD ($) $ in Millions			3 Months Ended
	Mar. 22, 2018	Dec. 08, 2016	Jun. 30, 2019
Revolving Credit Facility
Line of Credit Facility [Abstract]
Debt term		5 years
Revolving credit facility, maximum borrowing capacity			$ 1,500.0
Revolving credit facility, available amount			$ 1,500.0
Number of possible increases in margin			2
Effective interest rate			4.15%
Change in control, trigger percentage			50.00%
Letter of Credit
Line of Credit Facility [Abstract]
Letters of credit outstanding, amount			$ 0.0
Minimum | Revolving Credit Facility
Line of Credit Facility [Abstract]
Revolving credit facility, commitment fee annual percentage			0.25%
Maximum | Revolving Credit Facility
Line of Credit Facility [Abstract]
Revolving credit facility, commitment fee annual percentage			0.375%
Base Rate | Revolving Credit Facility
Line of Credit Facility [Abstract]
Basis spread on variable interest rate			0.75%
LIBOR | Revolving Credit Facility
Line of Credit Facility [Abstract]
Basis spread on variable interest rate			1.75%
Potential increases in interest rate upon certain increases to leverage ratios, total			0.50%
Potential increase in interest rate upon certain increases to leverage ratios, per reduction			0.25%
LIBOR | Minimum | Revolving Credit Facility
Line of Credit Facility [Abstract]
Coupon rate			0.00%
Previous Term Loan A | Term Loan
Line of Credit Facility [Abstract]
Debt term		5 years
Term Loan A Facility | Term Loan
Line of Credit Facility [Abstract]
Number of possible increases in margin			2
Effective interest rate			4.15%
Quarterly principal payment percent			1.25%
Quarterly principal payment percent, year two			1.75%
Quarterly principal payment percent, year three			2.50%
Quarterly principal payment percent, year four			2.50%
Term Loan A Facility | Base Rate | Term Loan
Line of Credit Facility [Abstract]
Basis spread on variable interest rate			0.75%
Term Loan A Facility | LIBOR | Term Loan
Line of Credit Facility [Abstract]
Basis spread on variable interest rate			1.75%
Potential increases in interest rate upon certain increases to leverage ratios, total			0.50%
Potential increase in interest rate upon certain increases to leverage ratios, per reduction			0.25%
Term Loan A Facility | LIBOR | Minimum | Term Loan
Line of Credit Facility [Abstract]
Coupon rate			0.00%
Term Loan B Facility | Term Loan
Line of Credit Facility [Abstract]
Effective interest rate			4.65%
Quarterly principal payment percent			0.25%
Term Loan B Facility | Base Rate | Term Loan
Line of Credit Facility [Abstract]
Basis spread on variable interest rate	1.25%
Term Loan B Facility | LIBOR | Term Loan
Line of Credit Facility [Abstract]
Basis spread on variable interest rate	2.25%
Term Loan B Facility | LIBOR | Minimum | Term Loan
Line of Credit Facility [Abstract]
Coupon rate			0.00%
Previous Term Loan B | Term Loan
Line of Credit Facility [Abstract]
Debt term		7 years

X

- Definition

Trigger for change in control for purposes of senior revolving credit facility, as a percentage

+ References

No definition available.

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- Definition

Debt Instrument, Interest Rate, Potential Increase in Rate Upon Certain Increases To Leverage Ratios

+ References

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- Definition

Debt Instrument, Interest Rate, Potential Increase in Rate Upon Certain Increases To Leverage Ratios, Per Reduction

+ References

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- Definition

Debt Instrument, Interest Rate, Potential Increases in Interest Rate

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- Definition

Debt Instrument, Periodic Payment, Quarterly Principal Payments

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- Definition

Debt Instrument, Periodic Payment, Quarterly Principal Payments, Year Five

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- Definition

Debt Instrument, Periodic Payment, Quarterly Principal Payments, Year Three

+ References

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- Definition

Debt Instrument, Periodic Payment, Quarterly Principal Payments, Year Two

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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-Topic 210
-SubTopic 10
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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-Topic 210
-SubTopic 10
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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