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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 false 6 TWC common stock owned by Time Warner 1 twc_StockHeldByParent twc false na instant Common stock held by Parent Company prior to separation. false false false false false false false false false false false terselabel false 1 false true false false 0.84 0.84 false false false 2 false false false false 0 0 false false false 3 false true false false 0.84 0.84 false false false 4 false false false false 0 0 false false false us-types:percentItemType pure Common stock held by Parent Company prior to separation. 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No authoritative reference available. false 9 Net income attributable to TWC shareholders (in US dollars) 1 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 342000000 342 false false false 2 false true false false 316000000 316 false false false 3 false true false false 556000000 556 false false false 4 false true false false 480000000 480 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. 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No authoritative reference available. true 12 Average common shares outstanding - basic 1 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 354800000 354.8 false false false 2 false true false false 352300000 352.3 false false false 3 false true false false 353900000 353.9 false false false 4 false true false false 345700000 345.7 false false false xbrli:sharesItemType shares Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period. 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No authoritative reference available. false 14 Average common shares outstanding - diluted (two-class method) 1 twc_AverageSharesTwoClassMethod twc false na duration The average number of shares issued and outstanding that are used in calculating diluted EPS under the two-class method,... false false false false false false false false false false false totallabel false 1 false true false false 357200000 357.2 false false false 2 false true false false 352300000 352.3 false false false 3 false true false false 356000000 356.0 false false false 4 false true false false 345700000 345.7 false false false xbrli:sharesItemType shares The average number of shares issued and outstanding that are used in calculating diluted EPS under the two-class method, determined based on the timing of issuance of shares in the period. 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