Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Business Segments - Summary of Financial Information of Company's Reportable Segments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 1,006us-gaap_Revenues	$ 1,070us-gaap_Revenues	$ 952us-gaap_Revenues	$ 1,077us-gaap_Revenues	$ 1,041us-gaap_Revenues	$ 1,113us-gaap_Revenues	$ 1,070us-gaap_Revenues	$ 1,072us-gaap_Revenues	$ 4,105us-gaap_Revenues	$ 4,296us-gaap_Revenues	$ 3,414us-gaap_Revenues
Operating profit	26us-gaap_OperatingIncomeLoss	50us-gaap_OperatingIncomeLoss	43us-gaap_OperatingIncomeLoss	62us-gaap_OperatingIncomeLoss	50us-gaap_OperatingIncomeLoss	63us-gaap_OperatingIncomeLoss	53us-gaap_OperatingIncomeLoss	58us-gaap_OperatingIncomeLoss	181us-gaap_OperatingIncomeLoss	224us-gaap_OperatingIncomeLoss	168us-gaap_OperatingIncomeLoss
Depreciation and amortization									21	17	12
Long-lived assets
Property, plant and equipment, net	124us-gaap_PropertyPlantAndEquipmentNet				102us-gaap_PropertyPlantAndEquipmentNet				124us-gaap_PropertyPlantAndEquipmentNet	102us-gaap_PropertyPlantAndEquipmentNet	61us-gaap_PropertyPlantAndEquipmentNet
Goodwill	346us-gaap_Goodwill				333us-gaap_Goodwill				346us-gaap_Goodwill	333us-gaap_Goodwill	343us-gaap_Goodwill
Intangibles, net	73				68				73	68	74
Total assets	2,596us-gaap_Assets				2,183us-gaap_Assets				2,596us-gaap_Assets	2,183us-gaap_Assets	2,373us-gaap_Assets
United States [Member]
Segment Reporting Information [Line Items]
Revenue									2,793	2,863	2,257
Operating profit									89	134	94
Depreciation and amortization									16	11	7
Long-lived assets
Property, plant and equipment, net	101				86				101	86	40
Goodwill	222				202				222	202	204
Intangibles, net	58				50				58	50	53
Total assets	1,735				1,582				1,735	1,582	1,603
Canada (Member)
Segment Reporting Information [Line Items]
Revenue									669	773	591
Operating profit									47	47	37
Depreciation and amortization									3	3	2
Long-lived assets
Property, plant and equipment, net	20				13				20	13	16
Goodwill	101				109				101	109	117
Intangibles, net	1				2				1	2	3
Total assets	500				411				500	411	549
International [Member]
Segment Reporting Information [Line Items]
Revenue									643	660	566
Operating profit									45	43	37
Depreciation and amortization									2	3	3
Long-lived assets
Property, plant and equipment, net	3				3				3	3	5
Goodwill	23				22				23	22	22
Intangibles, net	14				16				14	16	18
Total assets	$ 361				$ 190				$ 361	$ 190	$ 221