Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2014

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following table provides the components of net periodic benefit cost for the three months ended March 31, 2014 and 2013 (in millions):

	Pension Benefits						Retiree Medical and Other Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	—		$	1		$	—		$	—
Interest cost	186			163			15			13
Expected return on assets	(196		)	(180		)	(5		)	(4		)
Settlements	2			—			—			—
Amortization of:
Prior service cost	7			7			(61		)	(61		)
Unrecognized net loss (gain)	11			23			(2		)	(2		)
Net periodic benefit cost	$	10		$	14		$	(53	)	$	(54	)

AA [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following table provides the components of net periodic benefit cost for the three months ended March 31, 2014 and 2013 (in millions):

	Pension Benefits						Retiree Medical and Other Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	—		$	1		$	—		$	—
Interest cost	185			163			14			13
Expected return on assets	(195		)	(180		)	(5		)	(4		)
Settlements	2			—			—			—
Amortization of:
Prior service cost	7			7			(60		)	(61		)
Unrecognized net loss (gain)	11			23			(2		)	(2		)
Net periodic benefit cost	$	10		$	14		$	(53	)	$	(54	)