Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2014

Equity [Abstract]

Component of Accumulated Other Comprehensive Income

The changes in the balances of each component of accumulated other comprehensive income, net of tax, which is included as a component of Waste Management, Inc. stockholders’ equity, are as follows (in millions, with amounts in parentheses representing debits to accumulated other comprehensive income):

	Derivative Instruments			Available- for-Sale Securities		Foreign Currency Translation Adjustments			Post- Retirement Benefit Plans		Total
Balance, December 31, 2013	$	(62	)	$	6	$	208		$	2	$	154
Other comprehensive income (loss) before reclassifications net of tax expense (benefit) of $(3), $0, $0 and $0, respectively		(5	)		—		(42	)		—		(47	)
Amounts reclassified from accumulated other comprehensive income net of tax (expense) benefit of $(1), $0, $0 and $0, respectively		(1	)		—		(17	)		—		(18	)
Net current period other comprehensive income (loss)		(6	)		—		(59	)		—		(65	)
Balance, March 31, 2014	$	(68	)	$	6	$	149		$	2	$	89

Other Comprehensive Income (Loss) Before Reclassifications Associated With Cash Flow Derivative Instruments

The amounts of other comprehensive income (loss) before reclassifications associated with our cash flow derivative instruments are as follows (in millions):

	Amount of Derivative Gain (Loss) Recognized in OCI (Effective Portion)
	Three Months Ended March 31,
Derivatives Designated as Cash Flow Hedges	2014			2013
Forward-starting interest rate swaps	$	(8	)	$	2
Foreign currency derivatives		10			7
Electricity commodity derivatives		(10	)		(10	)
Total before tax		(8	)		(1	)
Tax (expense) benefit		3			—
Net of tax	$	(5	)	$	(1	)

Reclassification of Component of Accumulated Other Comprehensive Income

The significant amounts reclassified out of each component of accumulated other comprehensive income are as follows (in millions, with amounts in parentheses representing debits to the statement of operations classification):

	Amount Reclassified from Accumulated Other Comprehensive Income
	Three Months Ended March 31,						Statement of
Detail About Accumulated Other Comprehensive Income Components	2014			2013			Operations Classification
Gains and losses on cash flow hedges:
Forward-starting interest rate swaps	$	(1	)	$	(2	)	Interest expense
Treasury rate locks		(1	)		—		Interest expense
Foreign currency derivatives		13			8		Other, net
Electricity commodity derivatives		(9	)		(5	)	Operating revenues
		2			1		Total before tax
		(1	)		—		Tax (expense) benefit
Total reclassifications for the period	$	1		$	1		Net of tax