Fair Value Measurements (Details) - USD ($) $ in Millions		Sep. 30, 2017	Dec. 31, 2016
Successor | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value	[1]	$ 3,251
Marketable Securities, Fair Value		1,826
Total Assets, Fair Value		5,090
Long-term Debt, Fair Value	[2]	11,097
Total liabilities at fair value, net		11,129
Successor | Fair Value, Measurements, Recurring | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Gross	[3]	13
Derivative Liability, Gross	[3]	32
Successor | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Gross		88
Derivative Asset, Total		13
Derivative Liability, Gross		107
Derivative Liability, Total		32
Successor | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value	[1]	3,251
Marketable Securities, Fair Value		1,826
Total Assets, Fair Value		5,090
Long-term Debt, Fair Value	[2]	11,097
Total liabilities at fair value, net		11,129
Successor | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Gross	[3]	13
Derivative Liability, Gross	[3]	$ 32
Predecessor | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value	[4]		$ 2,713
Marketable Securities, Fair Value			1,362
Total Assets, Fair Value			4,257
Long-term Debt, Fair Value	[5]		8,464
Total liabilities at fair value, net			8,585
Predecessor | Fair Value, Measurements, Recurring | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Gross	[6]		182
Derivative Liability, Gross	[6]		121
Predecessor | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value	[4]		2,713
Marketable Securities, Fair Value			1,362
Total Assets, Fair Value			4,257
Long-term Debt, Fair Value	[5]		8,464
Total liabilities at fair value, net			8,585
Predecessor | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Gross	[6]		182
Derivative Liability, Gross	[6]		$ 121

[1] Time deposits included in "Cash and cash equivalents" in the consolidated balance sheets are held at amortized cost, which approximates fair value.

[2] See Note 12 for information on fair value measurements of long-term debt.

[3] See Note 17 for the classification of derivatives in the consolidated balance sheets.

[4] Time deposits included in "Cash and cash equivalents" in the consolidated balance sheets are held at amortized cost, which approximates fair value.

[5] See Note 12 for information on fair value measurements of long-term debt.

[6] See Note 17 for the classification of derivatives in the consolidated balance sheets.