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Notes Payable, Long-Term Debt and Available Credit Facilities (Long Term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Successor
Debt Instrument [Line Items]
Capital Lease Obligations	$ 5
Unamortized Debt Discount and Issuance Costs, Net	0
Long-term Debt, Current Maturities	1,328
Long-term Debt and Capital Lease Obligations	9,815
Successor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year One [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,293
Long-term Debt, Weighted Average Interest Rate	1.59%
Successor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Two [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 525
Long-term Debt, Weighted Average Interest Rate	2.23%
Successor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Three [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3,079
Long-term Debt, Weighted Average Interest Rate	1.78%
Successor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Four [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,586
Long-term Debt, Weighted Average Interest Rate	2.07%
Successor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Six and Thereafter [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3,496
Long-term Debt, Weighted Average Interest Rate	3.32%
Successor \| Loans Payable [Member] \| Term Loan Facility due 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,000
Long-term Debt, Weighted Average Interest Rate	2.24%
Successor \| Loans Payable [Member] \| Other Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 19
Long-term Debt, Weighted Average Interest Rate	4.32%
Successor \| Loans Payable [Member] \| Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 30
Long-term Debt, Weighted Average Interest Rate	2.84%
Successor \| Loans Payable [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 110
Long-term Debt, Weighted Average Interest Rate	0.98%
Predecessor
Debt Instrument [Line Items]
Capital Lease Obligations		$ 9
Unamortized Debt Discount and Issuance Costs, Net		35
Long-term Debt, Current Maturities		4
Long-term Debt and Capital Lease Obligations		8,107
Predecessor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year One [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		1,290
Predecessor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Two [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		500
Predecessor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Three [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		999
Predecessor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Four [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		1,498
Predecessor \| Loans Payable [Member] \| Promissory Notes And Debentures, Final Maturity, Year Six and Thereafter [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		3,188
Predecessor \| Loans Payable [Member] \| Term Loan Facility due 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		500
Predecessor \| Loans Payable [Member] \| Other Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		22
Predecessor \| Loans Payable [Member] \| Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		29
Predecessor \| Loans Payable [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 111