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Financing Arrangements and Derivative Financial Instruments - Notes Narrative (Details) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 06, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Notes payable |  | $ 3,846,000,000 | $ 3,860,000,000
5.125% due 2023 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, redemption, description |  | On April 6, 2021, we also issued a notice to redeem our $1.0 billion 5.125% Senior Notes due 2023 on May 6, 2021 at a price of 100% of the principal amount, plus accrued and unpaid interest through the redemption date. The redemption will be funded using the proceeds of the new debt offering, together with cash and cash equivalents. |
Interest rate, stated percentage |  | 5.125% | 5.125%
Subsequent Event | 5.125% due 2023 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, principal amount | $ 1,000,000,000.0 |  |
Interest rate, stated percentage | 5.125% |  |
Debt instrument, redemption price percentage | 100.00% |  |
Debt extinguishment costs related to remaining unamortized debt issuance costs | $ 5,000,000 |  |
Subsequent Event | 5.25% due 2031 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, principal amount | $ 550,000,000 |  |
Interest rate, stated percentage | 5.25% |  |
Subsequent Event | 5.625% due 2033 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, principal amount | $ 450,000,000 |  |
Interest rate, stated percentage | 5.625% |  |

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