Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following tables provide the components of net periodic benefit cost (in millions):

	Pension Benefits						Retiree Medical and Other Benefits
Three Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	2		$	1		$	1		$	—
Interest cost	185			163			16			13
Expected return on assets	(197		)	(180		)	(5		)	(4		)
Settlements	1			—			—			—
Amortization of:
Prior service cost (benefit)	7			7			(59		)	(61		)
Unrecognized net loss (gain)	12			23			(2		)	(2		)
Net periodic benefit cost	$	10		$	14		$	(49	)	$	(54	)

	Pension Benefits						Retiree Medical and Other Benefits
Six Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	2		$	2		$	1		$	—
Interest cost	371			326			31			26
Expected return on assets	(393		)	(360		)	(10		)	(8		)
Settlements	3			—			—			—
Amortization of:
Prior service cost (benefit)	14			14			(120		)	(122		)
Unrecognized net loss (gain)	23			46			(4		)	(4		)
Net periodic benefit cost	$	20		$	28		$	(102	)	$	(108	)

AA [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The following tables provide the components of net periodic benefit cost (in millions):

	Pension Benefits						Retiree Medical and Other Benefits
Three Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	1		$	1		$	—		$	—
Interest cost	184			163			14			13
Expected return on assets	(196		)	(180		)	(5		)	(4		)
Settlements	1			—			—			—
Amortization of:
Prior service cost (benefit)	7			7			(58		)	(61		)
Unrecognized net loss (gain)	12			23			(2		)	(2		)
Net periodic benefit cost	$	9		$	14		$	(51	)	$	(54	)

	Pension Benefits						Retiree Medical and Other Benefits
Six Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	1		$	2		$	—		$	—
Interest cost	369			326			28			26
Expected return on assets	(391		)	(360		)	(10		)	(8		)
Settlements	3			—			—			—
Amortization of:
Prior service cost (benefit)	14			14			(118		)	(122		)
Unrecognized net loss (gain)	23			46			(4		)	(4		)
Net periodic benefit cost	$	19		$	28		$	(104	)	$	(108	)