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Discontinued Operations and Assets Held for Sale (Carrying Amounts of Assets and Liabilities Classified as Associated with Discontinued Operations on Consolidated Balance Sheets) (Parenthetical) (Details) - Scenario Forecast [Member] - Senior Notes [Member] $ in Millions | 3 Months Ended
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Sep. 30, 2019 USD ($)
4.00% due July 15, 2021 [Member] |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |
Long-term debt retired | $ 500
Debt interest rate, stated percentage | 4.00%
Debt, maturity date | Jul. 15, 2021
3.25% due May 15, 2022 [Member] |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |
Long-term debt retired | $ 1,000
Debt interest rate, stated percentage | 3.25%
Debt, maturity date | May 15, 2022

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