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v3.19.3

Indebtedness - Debt Outstanding (Parenthetical) (Detail) | Sep. 30, 2019 | Dec. 31, 2018
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4.875% Senior Notes Due 2025 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 4.875% | 4.875%
5.00% Senior Notes Due 2023 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.00% | 5.00%
5.00% Senior Notes Due 2022 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.00% | 5.00%
5.75% Senior Notes Due 2021 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.75% | 5.75%
5.875% Senior Notes Due 2022 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.875% | 5.875%
5.00% Senior Subordinated Notes Due 2023 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.00% | 5.00%
5.00% Senior Subordinated Notes Due 2022 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.00% | 5.00%
5.75% Senior Subordinated Notes Due 2021 |  |
Debt Instrument [Line Items] |  |
Interest rate on notes | 5.75% | 5.75%
Notes Payable to Banks | 3.3% Bank Debt |  |
Debt Instrument [Line Items] |  |
Bank debt percentage | 3.30% | 3.30%

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