Description of the Company and Basis of Presentation Description of Company and Basis of Presentation (Schedule of Changes in Pension Estimate) (Details) - USD ($) $ in Millions		6 Months Ended		12 Months Ended
	Dec. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016
Change in Accounting Estimate [Line Items]
Pension and postretirement net periodic benefit cost		$ (26)	$ (24)
Change in Assumptions for Pension Plans [Member] | Scenario, Forecast [Member]
Change in Accounting Estimate [Line Items]
Pension and postretirement net periodic benefit cost				$ (29)
Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Pension Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		3.40%
Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Pension Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		2.20%
Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Postretirement Benefit Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		3.10%
Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Postretirement Benefit Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		3.10%
Service and Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Pension Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost	4.20%
Service and Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Pension Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost	2.60%
Service and Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Postretirement Benefit Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost	4.00%
Service and Interest Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Postretirement Benefit Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost	3.60%
Service Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Pension Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		4.50%
Service Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Pension Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		3.10%
Service Cost [Member] | Change in Assumptions for Pension Plans [Member] | United States Postretirement Benefit Plan of US Entity [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		4.20%
Service Cost [Member] | Change in Assumptions for Pension Plans [Member] | Foreign Postretirement Benefit Plan [Member]
Change in Accounting Estimate [Line Items]
Service and interest cost		3.80%