Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Committed and Available Credit Facilities (Details) - USD ($) $ in Millions	36 Months Ended
	Mar. 22, 2019	Dec. 31, 2018	Mar. 22, 2016
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 3,000
Term Loan Facility due 2020 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 4,500
Line of Credit Facility, Remaining Borrowing Capacity		2,500
Successor [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		7,500
Line of Credit Facility, Remaining Borrowing Capacity		5,456
Successor [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		3,000
Line of Credit Facility, Remaining Borrowing Capacity		2,956
Successor [Member] | Term Loan Facility due 2020 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		4,500
Line of Credit Facility, Remaining Borrowing Capacity		$ 2,500
Scenario, Forecast [Member] | Term Loan Facility due 2020 [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Term	3 years