Employee Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

	Pension Benefits						Other Benefits						Superannuation, SERP(1) and ESBP(2)
	For the Three Months Ended June 30,						For the Three Months Ended June 30,						For the Three Months Ended June 30,
(Dollars in millions)	2013			2012			2013			2012			2013		2012
Components of net periodic benefit cost:
Service cost	$	21		$	21		$	3		$	3		$	—	$	—
Interest cost		24			24			3			3			1		1
Expected return on plan assets		(42	)		(36	)		(4	)		(3	)		—		—
Recognized net actuarial loss		27			21			2			2			—		—
Total net periodic benefit cost	$	30		$	30		$	4		$	5		$	1	$	1

	Pension Benefits						Other Benefits						Superannuation, SERP(1) and ESBP(2)
	For the Six Months Ended June 30,						For the Six Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in millions)	2013			2012			2013			2012			2013		2012
Components of net periodic benefit cost:
Service cost	$	43		$	39		$	7		$	6		$	—	$	—
Interest cost		49			50			6			6			2		2
Expected return on plan assets		(83	)		(73	)		(8	)		(6	)		—		—
Recognized net actuarial loss		54			44			3			4			1		1
Total net periodic benefit cost	$	63		$	60		$	8		$	10		$	3	$	3

(1)

Supplemental Executives Retirement Plan (SERP).

(2)

Executive Supplemental Benefit Plans (ESBP).