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Debt - Conversion (Details) - Senior notes $ in Millions | 3 Months Ended
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Jun. 30, 2019 USD ($)
Debt Conversion [Line Items] |
Amount of notes exchanged | $ 884
6.625% senior notes due 2020 |
Debt Conversion [Line Items] |
Amount of notes exchanged | 229
6.875% senior notes due 2020 |
Debt Conversion [Line Items] |
Amount of notes exchanged | 134
6.125% senior notes due 2021 |
Debt Conversion [Line Items] |
Amount of notes exchanged | 381
5.375% senior notes due 2021 |
Debt Conversion [Line Items] |
Amount of notes exchanged | $ 140

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + 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=98513485&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 + Details
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