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Debt - Unsecured Revolving Credit and Term Loan Facilities (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) option | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |
Outstanding borrowings | $ 0 |  | $ 0
Unsecured term loan facility | Unsecured revolving credit facility and term loan |  |  |
Debt Instrument [Line Items] |  |  |
Accordion feature, new maximum borrowing capacity | 1,500,000,000 |  |
Unsecured term loan facility | Unsecured revolving credit facility |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding borrowings | $ 0 |  | 0
Number of options to extend maturity | option | 2 |  |
Extension period (in months) | 6 months |  |
Unsecured term loan facility | Unsecured revolving credit facility | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Extension fee, as a percent of outstanding commitments under revolving credit facility (as a percent) | 0.0625% |  |
Unsecured term loan facility | Unsecured revolving credit facility | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Extension fee, as a percent of outstanding commitments under revolving credit facility (as a percent) | 0.075% |  |
Unsecured term loan facility | Term loan facility |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding borrowings | $ 175,000,000 |  | 175,000,000
Unsecured term loan facility | Unsecured term loan facility |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity | 175,000,000 |  |
Accordion feature, new maximum borrowing capacity | 225,000,000 |  |
Outstanding borrowings | 175,000,000 |  |
Unsecured term loan facility | Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity | 1,065,000,000.000 |  |
Unsecured term loan facility | Credit Facility - Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity | 850,000,000 |  |
Outstanding borrowings |  | $ 0 |
Unsecured term loan facility | Unsecured term loan facility |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity | 215,000,000 |  |
Outstanding borrowings | $ 215,000,000 |  | $ 215,000,000

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- Definition Debt Instrument, Option to Extend, Number + References No definition available. + Details
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- Definition Line of Credit Facility, Accordion Feature, New Maximum Borrowing Capacity + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line of Credit Facility, Extension Fee, Percent of Outstanding Commitments Under Revolving Credit Facility + References No definition available. + Details
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- Definition Line of Credit Facility, Extension Period + 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. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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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=120391452&loc=d3e13212-122682 + Details
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