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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Changes to Net Insurance Liabilities

The changes to our net insurance liabilities for the three years ended December 31, 2016 are summarized below (in millions):


		Gross Claims Liability				Receivables Associated with Insured Claims(a)				Net Claims Liability
Balance, December 31, 2013		$	590			$	(197	)		$	393
Self-insurance expense (benefit)			135				(9	)			126
Cash (paid) received			(128	)			23				(105	)

Balance, December 31, 2014			597				(183	)			414
Self-insurance expense (benefit)			169				(39	)			130
Cash (paid) received			(123	)			4				(119	)

Balance, December 31, 2015			643				(218	)			425
Self-insurance expense (benefit)			71				30				101
Cash (paid) received			(126	)			17				(109	)

Balance, December 31, 2016(b)		$	588			$	(171	)		$	417

Current portion at December 31, 2016		$	133			$	(20	)		$	113
Long-term portion at December 31, 2016		$	455			$	(151	)		$	304

(a)	Amounts reported as receivables associated with insured claims are related to both paid and unpaid claims liabilities.

(b)	We currently expect substantially all of our net claims liability to be settled in cash over the next six years.