XML 51 R66.htm IDEA: XBRL DOCUMENT v3.19.3
Financing Arrangement (Line of Credit Facility) (Details) - USD ($)
$ in Millions
6 Months Ended
Mar. 19, 2015
Sep. 30, 2019
Line of Credit Facility [Line Items]    
Credit Facility, Initiation Date   Aug. 29, 2019
Credit Facility, Expiration Date Mar. 19, 2020 Aug. 29, 2024
Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Credit Facility, Maximum Borrowing Capacity $ 500 $ 500
Option To Request Additional Commitments On Credit Facility   500
Debt issuance costs   $ 2
Line of Credit Facility Term   5 years