Subsequent Events (Details) - USD ($) shares in Millions, $ in Billions |
12 Months Ended | ||
---|---|---|---|
Oct. 24, 2018 |
Oct. 02, 2018 |
Sep. 30, 2018 |
|
Subsequent Event [Member] | |||
Subsequent Event [Line Items] | |||
Stock Repurchased and Retired During Period, Shares | 72.0 | ||
Revolving Credit Facility [Member] | threehundredsixtyfourdaycreditfacility [Member] | |||
Subsequent Event [Line Items] | |||
Maturity date of credit facility | Oct. 25, 2018 | ||
Revolving Credit Facility [Member] | threehundredsixtyfourdaycreditfacility [Member] | Subsequent Event [Member] | |||
Subsequent Event [Line Items] | |||
Unsecured revolving credit facility | $ 1.0 | ||
Maturity date of credit facility | Oct. 23, 2019 | ||
Repurchase Agreements [Member] | Subsequent Event [Member] | |||
Subsequent Event [Line Items] | |||
Accelerated Share Repurchases, Settlement (Payment) or Receipt | $ 5.0 |