Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Accounts Payable and Accrued Liabilities [Abstract]
Accounts Payable	$ 321	$ 298
Accrued Employee Benefits	228	298
Liability for Claims and Claims Adjustment Expense	206	208
Derivative Liability, Fair Value, Gross Liability	181	252
Deferred Revenue	123	151
Other Accrued Liabilities	471	528
Accrued expenses and other liabilities	$ 1,530	$ 1,735