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Summary of Significant Accounting Policies - Schedule of Dividends Payable (Details) - $ / shares | Jun. 04, 2021 | Jun. 05, 2020 | Jun. 07, 2019
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Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend per share | $ 2.68 | $ 2.44 | $ 2.28
Dividend Payable 1 [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend Date | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 28, 2019
Record Date | Jun. 15, 2021 | Jun. 15, 2020 | Jun. 17, 2019
Dividend per share | $ 0.67 | $ 0.61 | $ 0.57
Dividend Payable 2 [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend Date | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Record Date | Sep. 15, 2021 | Sep. 15, 2020 | Sep. 16, 2019
Dividend per share | $ 0.67 | $ 0.61 | $ 0.57
Dividend Payable 3 [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend Date | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Record Date | Dec. 15, 2021 | Dec. 15, 2020 | Dec. 16, 2019
Dividend per share | $ 0.67 | $ 0.61 | $ 0.57
Dividend Payable 4 [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend Date | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Record Date | Mar. 15, 2022 | Mar. 15, 2021 | Mar. 16, 2020
Dividend per share | $ 0.67 | $ 0.61 | $ 0.57

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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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