Shareholders' Equity (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of changes in accumulated comprehensive income [Line Items]
Beginning Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (454)
Other comprehensive income (loss), net of tax	75	$ 6
Ending Accumulated Other Comprehensive Income (Loss), Net of Tax	(379)
Translation Adjustments and Gains (Losses) From Intra-Entity Transactions of a Long-Term Nature
Schedule of changes in accumulated comprehensive income [Line Items]
Beginning Accumulated Other Comprehensive Income (Loss), Net of Tax	(332)
Gains (losses) arising during the year classified into accumulated OCI, net of tax	49
(Gains) losses reclassified from accumulated OCI, net of tax	0
Other comprehensive income (loss), net of tax	49
Ending Accumulated Other Comprehensive Income (Loss), Net of Tax	(283)
Pension and Post-Retirement Benefits
Schedule of changes in accumulated comprehensive income [Line Items]
Beginning Accumulated Other Comprehensive Income (Loss), Net of Tax	(127)
Gains (losses) arising during the year classified into accumulated OCI, net of tax	3
(Gains) losses reclassified from accumulated OCI, net of tax	20
Other comprehensive income (loss), net of tax	23
Ending Accumulated Other Comprehensive Income (Loss), Net of Tax	(104)
Derivative Instruments
Schedule of changes in accumulated comprehensive income [Line Items]
Beginning Accumulated Other Comprehensive Income (Loss), Net of Tax	5
Gains (losses) arising during the year classified into accumulated OCI, net of tax	(3)
(Gains) losses reclassified from accumulated OCI, net of tax	6
Other comprehensive income (loss), net of tax	3
Ending Accumulated Other Comprehensive Income (Loss), Net of Tax	8
Total
Schedule of changes in accumulated comprehensive income [Line Items]
Beginning Accumulated Other Comprehensive Income (Loss), Net of Tax	(454)
Gains (losses) arising during the year classified into accumulated OCI, net of tax	49
(Gains) losses reclassified from accumulated OCI, net of tax	26
Other comprehensive income (loss), net of tax	75
Ending Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (379)