Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Loss Contingencies [Line Items]

Schedule of Future Minimum Lease Payments for Capital and Operating Leases [Table Text Block]

Future minimum lease payments as of December 31, 2015, are summarized as follows (in millions):

December 31,	Capital Leases			Operating Leases		a
2016	$	189		$	576
2017	76			531
2018	73			472
2019	70			443
2020	68			444
Thereafter	361			1,526
Total	837			$	3,992
Less amount representing interest	(177		)
Present value of minimum lease payments	$	660

^a Excludes leases having non-cancelable lease terms of less than one year and per diem leases.

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity in the Company’s accrued obligations for asbestos and other personal injury matters (in millions):

	Year Ended			Year Ended			Year Ended
	December 31, 2015			December 31, 2014			December 31, 2013
Beginning balance	$	375		$	387		$	462
Accruals	81			61			21
Payments	(81		)	(73		)	(96		)
Ending balance	$	375		$	375		$	387

Accrued Obligations for Environmental Matters

The following table summarizes the activity in the Company’s accrued obligations for environmental matters (in millions):

	Year Ended			Year Ended			Year Ended
	December 31, 2015			December 31, 2014			December 31, 2013
Beginning balance	$	404		$	435		$	458
Accruals	4			13			19
Payments	(39		)	(44		)	(42		)
Ending balance	$	369		$	404		$	435