Defined Benefit Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2015

Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The following summarizes the components of net periodic benefit cost (credit):

	Three Months Ended June 30,
	Pension Benefits						Other Benefits
(In millions)	2015			2014			2015			2014
Service cost	$	12		$	11		$	1		$	1
Interest cost	13			15			2			3
Expected return on plan assets	(17		)	(14		)	—			—
Amortization:
– prior service cost (credit)	(2		)	2			(1		)	(1		)
– actuarial loss	7			10			—			—
Net settlement loss (a)	64			8			—			—
Net curtailment loss (b)	—			—			2			—
Net periodic benefit cost	$	77		$	32		$	4		$	3

	Six Months Ended June 30,
	Pension Benefits						Other Benefits
(In millions)	2015			2014			2015			2014
Service cost	24			23			2			2
Interest cost	27			31			5			6
Expected return on plan assets	(36		)	(32		)	—			—
Amortization:
– prior service cost (credit)	(1		)	3			(2		)	(2		)
– actuarial loss	14			16			—			—
Net settlement loss(a)	81			71			—			—
Net curtailment loss (gain) (b)	1			—			(4		)	—
Net periodic benefit cost	$	110		$	112		$	1		$	6

^(a)  Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan's total service and interest cost for that year.

^(b)  Related to the workforce reduction, which reduced the future expected years of service for employees participating in the plans.