Represents the operating margin assigned to segments for the period.

No definition available.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

No definition available.

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

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.

+ References

No definition available.

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Segment Information (Details) $ in Millions			3 Months Ended		9 Months Ended
Segment Information (Details) $ in Millions	Nov. 01, 2017	Jan. 10, 2017 segment	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Segment information
Number of reportable segments (segments)		2			2
Revenues			$ 4,034	$ 4,382		$ 12,333	$ 13,181
Expenses			3,547	3,789		10,848	11,253
Total reportable segment income			487	593		1,485	1,928
Operating segments
Segment information
Revenues			3,558	3,916		10,943	11,776
Expenses			1,913	2,068		5,720	6,009
Total reportable segment income			$ 1,645	$ 1,848		$ 5,223	$ 5,767
Margin percentage (percent)			46.00%	47.00%		48.00%	49.00%
Enterprise
Segment information
Revenues			$ 2,171	$ 2,444		$ 6,742	$ 7,321
Expenses			1,292	1,425		3,907	4,116
Total reportable segment income			$ 879	$ 1,019		$ 2,835	$ 3,205
Margin percentage (percent)			40.00%	42.00%		42.00%	44.00%
Consumer
Segment information
Revenues			$ 1,387	$ 1,472		$ 4,201	$ 4,455
Expenses			621	643		1,813	1,893
Total reportable segment income			$ 766	$ 829		$ 2,388	$ 2,562
Margin percentage (percent)			55.00%	56.00%		57.00%	58.00%
Subsequent event
Segment information
Number of reportable segments (segments)	2