Debt - Credit Agreement - Additional Information (Detail) - Credit Agreement [Member] - Revolving Credit Facility [Member] - USD ($) |
1 Months Ended | 3 Months Ended | |
|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2015 |
Mar. 31, 2020 |
|
| Debt Instrument [Line Items] | |||
| Senior asset-based revolving credit agreement, increase in total lender commitments | $ 100,000,000 | ||
| Senior asset-based revolving credit agreement, total lender commitments | $ 2,328,000,000 | $ 2,525,000,000 | |
| Commitments original term | 2023-07 | ||
| Senior asset-based revolving credit agreement, lender commitments expired | $ 197,000,000 | ||
| Syndicate of Banks [Member] | LIBOR [Member] | |||
| Debt Instrument [Line Items] | |||
| Line of credit, additional interest rate | 1.00% | ||
| Syndicate of Banks [Member] | Undrawn amounts interest rate [Member] | |||
| Debt Instrument [Line Items] | |||
| Line of credit, additional interest rate | 0.25% | ||
| Syndicate of Banks [Member] | Federal Funds Purchased [Member] | |||
| Debt Instrument [Line Items] | |||
| Line of credit, additional interest rate | 0.50% | ||