SCHEDULE II-Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II-Valuation and Qualifying Accounts

SCHEDULE II—Valuation and Qualifying Accounts

			Additions				Deductions
Description (in millions)	Balance at  Beginning of Period		Charged  to Costs and Expenses		Reclassifications from Other Accounts (a)		Write-offs Against Assets		Balance at End of  Period
Year ended December 31, 2016 deducted from receivables	$	83	$	85	$	1	$	82	$	87
Year ended December 31, 2015 deducted from receivables	72		79		3		71		83
Year ended December 31, 2014 deducted from receivables	43		99		11		81		72

(a) Amounts related to reclassifications from "Accounts payable and accrued liabilities" to "Allowance for doubtful accounts" in the Company's consolidated balance sheets.