Commitments and Contingencies (Unaudited) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		11 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 5-Year Term Revolving Credit Facility [Member]	Jun. 30, 2014 Other Current Liabilities [Member]	Jun. 30, 2014 Other Noncurrent Liabilities [Member]	Jun. 30, 2014 Inventoried Costs [Member]	Jun. 30, 2014 Other Noncurrent Assets [Member]
Site Contingency [Line Items]
Low-end of the range of reasonably possible future costs for environmental remediation sites	$ 364		$ 364
High-end of the range of reasonably possible future costs for environmental remediation sites	790		790
Accrual for Environmental Remediation Costs	383		383			132	251	66	129
Stand-by letters of credit and guarantees	322		322
Financial Arrangements [Abstract]
Surety bonds outstanding	165		165
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					1,775
Line of Credit Facility, Covenant Terms					65.00%
Line of Credit Facility, Amount Outstanding					0
Operating leases
Rental expense for operating leases, net of immaterial amounts of sublease rental income	$ 73	$ 74	$ 145	$ 148