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v3.20.4

Significant Accounting Policies - Narrative (Details) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) segment | Dec. 31, 2019 USD ($) | Jan. 01, 2020 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Number of operating segments | segment | 3 |  |  |  |
Accounting Standards Update [Extensible List] |  | us-gaap:AccountingStandardsUpdate201613Member |  |  |
Net decrease to total equity | $ (1,096.1) | $ (1,128.7) |  | $ (1,208.3) | $ (651.1)
Impact of adoption of new accounting standards |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Net decrease to total equity |  | $ 4.1 |  |  | $ 1.4
Impact of adoption of new accounting standards | ASU 2016-13 |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Net decrease to total equity |  |  | $ 4.1 |  |
GLP |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Ownership interest percentage in subsidiaries | 70.00% |  |  |  |

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