Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 220
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-Section 45
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section 45
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The amount of cash received during the period on settlement of a hedge.

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The premium (cost) of a hedge, expensed during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

Cash paid to settle hedges.

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Nominal or face amount of derivatives terminated during the period.

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Derivative Instruments and Hedging Activities - Additional Information (Detail)	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CAD
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding derivatives			$ 0
Currency Swaps [Member] \| Canada, Dollars
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivatives for intercompany debt \| CAD					CAD 370,000,000
Foreign Currency Derivatives [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Cash received in termination of foreign exchange cross currency swaps	$ 67,000,000
Expense associated with termination of foreign exchange cross currency swaps	$ 8,000,000
Foreign Currency Derivatives [Member] \| Cash Flow Hedging [Member] \| Long-term other assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency derivatives, Assets				$ 63,000,000
Foreign Currency Derivatives [Member] \| Cash Flow Hedging [Member] \| Current Other Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency derivatives, Assets				15,000,000
Forward Starting Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Deferred losses, net of taxes, related to cash flow hedges included in accumulated other comprehensive income (loss)			$ 37,000,000	$ 43,000,000
Term of senior notes to amortize deferred losses			10 years
Notional amount of derivatives		$ 175,000,000
Cash paid to settle hedges		$ 36,000,000
Treasury Rate Locks [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Deferred losses scheduled to be reclassified out of accumulated other comprehensive into interest expense over next 12 months, pre-tax			$ 10,000,000