Share-Based Payments - Total Shareholder Return Units Narrative (Details) - Total Shareholder Return Units (TSRUs) [Member]	12 Months Ended
Dec. 31, 2019 trading_day
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Trading day average used to calculate the conversion	20
Age of eligible unit holder which can elect to exercise and convert TSRUs when vested into PTUs	55 years
Award requisite service period	10 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term (years)	5 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term (years)	7 years

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Age Requirement

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Value Conversion, Trading Day Average

+ References

No definition available.

+ Details

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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.

+ Details

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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