Income Taxes (Net Operating Loss Carryforwards Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
US Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 26
Net operating loss carryforward expiration	Dec. 31, 2021
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 47
Valuation allowance offset for State net operating loss carryforwards due to uncertain recoverability	46
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 2,300
CHINA
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration	Dec. 31, 2011