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Risk Management - Interest Rate Risk Management (Details) $ in Millions | Jun. 30, 2020 USD ($)
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Fixed-to-Variable Interest Rate Contracts | Fair Value Hedging |
Derivative [Line Items] |
Notional amount | $ 8,025
Floating-to-Fixed Interest Rate Contracts | Fair Value Hedging |
Derivative [Line Items] |
Notional amount | 2,500
Floating-to-Fixed Interest Rate Contracts | Derivatives in cash flow hedging relationships |
Derivative [Line Items] |
Notional amount | 250
Current Portion Of Debt | Fixed-to-Variable Interest Rate Contracts |
Derivative [Line Items] |
Derivative, Amount of Hedged Item | 1,300
Long-term Debt | Fixed-to-Variable Interest Rate Contracts |
Derivative [Line Items] |
Derivative, Amount of Hedged Item | $ 6,725

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