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Derivative Financial Instruments - Schedule of Cash Flow Hedges (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Derivative [Line Items] |  |
Notional amount | $ 16,925.4 | $ 15,841.3
Designated as Hedging Instrument | Interest rate swaps |  |
Derivative [Line Items] |  |
Notional amount | $ 1,000.0 |
Fixed Rates | 2.56% |
Designated as Hedging Instrument | Interest Rate Swap 2 |  |
Derivative [Line Items] |  |
Notional amount | $ 500.0 |
Fixed Rates | 2.56% |
Designated as Hedging Instrument | Interest Rate Swap 3 |  |
Derivative [Line Items] |  |
Notional amount | $ 500.0 |
Fixed Rates | 2.55% |

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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 Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
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