Debt and Other Financing Arrangements - Term Loans (Details) - USD ($) $ in Billions	Oct. 01, 2018	Mar. 31, 2019
Line of Credit
Line of Credit Facility [Line Items]
Borrowing capacity	$ 4.9
Revolving Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.5
Debt term	5 years
Term Loan A Facility | Term Loan
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.7
Debt term	5 years
Effective rate		4.396%
Term Loan B Facility | Term Loan
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1.7
Debt term	7 years
Effective rate		6.031%