Subsequent Events - Additional Information (Detail) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Oct. 30, 2018 |
Sep. 30, 2018 |
Dec. 31, 2016 |
Feb. 21, 2017 |
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| Subsequent Event [Line Items] | ||||
| Share repurchase program authorized amount | $ 1,500.0 | $ 1,500.0 | ||
| Share repurchase program expiration date | Feb. 21, 2020 | Jun. 30, 2017 | ||
| Share repurchase program, remaining authorized capacity | $ 113.3 | $ 233.0 | ||
| Subsequent Events [Member] | ||||
| Subsequent Event [Line Items] | ||||
| Share repurchase program authorized amount | $ 1,500.0 | |||
| Share repurchase program expiration date | Oct. 30, 2023 |
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- Definition Amount of stock repurchase plan authorized. No definition available.
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- Definition Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format. No definition available.
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- Definition Amount remaining of a stock repurchase plan authorized. No definition available.
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. No definition available.
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- Details
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