Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Long Term Debt (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Successor [Member]
Debt Instrument [Line Items]
Capital Lease Obligations	[1]	$ 5
Unamortized debt discount and issuance costs	[1]	0
Long-term Debt, Current Maturities	[1]	1,315
Long-term Debt and Capital Lease Obligations	[1]	10,291
Predecessor [Member]
Debt Instrument [Line Items]
Capital Lease Obligations			$ 9
Unamortized debt discount and issuance costs			35
Long-term Debt, Current Maturities			4
Long-term Debt and Capital Lease Obligations			8,107
Loans Payable [Member] | Successor [Member] | Final Maturity 2018
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 1,280
Long-term Debt, Weighted Average Interest Rate		1.59%
Loans Payable [Member] | Successor [Member] | Final Maturity 2019
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 521
Long-term Debt, Weighted Average Interest Rate		2.23%
Loans Payable [Member] | Successor [Member] | Final Maturity 2020
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 3,070
Long-term Debt, Weighted Average Interest Rate		1.79%
Loans Payable [Member] | Successor [Member] | Final Maturity 2021
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 1,580
Long-term Debt, Weighted Average Interest Rate		2.07%
Loans Payable [Member] | Successor [Member] | Final Maturity 2023 and thereafter
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 3,492
Long-term Debt, Weighted Average Interest Rate		3.32%
Loans Payable [Member] | Successor [Member] | Term Loan Facility due 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 1,500
Long-term Debt, Weighted Average Interest Rate		2.35%
Loans Payable [Member] | Successor [Member] | Other Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 18
Long-term Debt, Weighted Average Interest Rate		4.32%
Loans Payable [Member] | Successor [Member] | Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 30
Long-term Debt, Weighted Average Interest Rate		2.85%
Loans Payable [Member] | Predecessor [Member] | Final Maturity 2018
Debt Instrument [Line Items]
Long-term Debt, Gross			1,290
Loans Payable [Member] | Predecessor [Member] | Final Maturity 2019
Debt Instrument [Line Items]
Long-term Debt, Gross			500
Loans Payable [Member] | Predecessor [Member] | Final Maturity 2020
Debt Instrument [Line Items]
Long-term Debt, Gross			999
Loans Payable [Member] | Predecessor [Member] | Final Maturity 2021
Debt Instrument [Line Items]
Long-term Debt, Gross			1,498
Loans Payable [Member] | Predecessor [Member] | Final Maturity 2023 and thereafter
Debt Instrument [Line Items]
Long-term Debt, Gross			3,188
Loans Payable [Member] | Predecessor [Member] | Term Loan Facility due 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			500
Loans Payable [Member] | Predecessor [Member] | Other Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			22
Loans Payable [Member] | Predecessor [Member] | Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			29
Medium-term Notes [Member] | Successor [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	[1]	$ 110
Long-term Debt, Weighted Average Interest Rate		1.22%
Medium-term Notes [Member] | Predecessor [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 111

[1] The Successor period includes the reflection of debt at fair value at the date of the Merger. See Note 3 for additional information regarding the Merger.