Debt - Narrative (Details)	9 Months Ended
Sep. 30, 2019 USD ($) installment
Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 800,000,000.0
Debt instrument, fixed interest rate	5.125%
Debt instrument, issue price, percent	100.00%
Debt instrument, redemption, prince, percentage of principal amount that may be redeemed	40.00%
Senior Notes \| Debt instrument, redemption with the proceeds of certain equity offerings
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	105.125%
Senior Notes \| Debt instrument, redemption excluding make whole premium
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Senior Notes \| Debt instrument, redemption due to specific kinds of change of control
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	101.00%
2016 Agreement
Debt Instrument [Line Items]
Debt instrument, interest, additional interest above eurodollar rate	1.00%
2016 Agreement \| Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, interest, additional interest above Federal Fund rate	0.50%
Minimum applicable margin rate	0.125%
Maximum applicable margin rate	1.50%
2016 Agreement \| Euro Dollar rate
Debt Instrument [Line Items]
Minimum applicable margin rate	1.125%
Maximum applicable margin rate	2.50%
2016 Agreement \| Term loans \| Bank Term Loan - A Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,500,000,000
2016 Agreement \| Revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,200,000,000
Bank Term Loan - A Facility \| Term loans
Debt Instrument [Line Items]
Line of credit facility, frequency of payments, number of quarterly installments \| installment	16

Debt instrument interest additional interest above eurodollar rate.

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- Definition

Debt instrument interest additional interest above federal fund rate.

+ References

No definition available.

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- Definition

Debt Instrument, Issue Price, Percent

+ References

No definition available.

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- Definition

Debt Instrument, Redemption Price, Percentage of Principal Amount That May Be Redeemed

+ References

No definition available.

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- Definition

Line of Credit Facility, Frequency of Payments, Number of Quarterly Installments

+ References

No definition available.

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- Definition

Maximum applicable margin rate.

+ References

No definition available.

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- Definition

Minimum applicable margin rate.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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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
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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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.

+ 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
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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