2019 KFC Pizza Hut All Other Segments Corporate and Unallocated (a) Combined Elimination Consolidated Revenues Revenue from external customers $ 6,039 $ 2,054 $ 121 $ 562 $ 8,776 $  $ 8,776 Inter-segment revenue 1  37  38 (38 )  Total $ 6,040 $ 2,054 $ 158 $ 562 $ 8,814 $ (38 ) $ 8,776 2018 KFC Pizza Hut All Other Segments Corporate and Unallocated (a) Combined Elimination Consolidated Revenues Revenue from external customers $ 5,688 $ 2,111 $ 99 $ 517 $ 8,415 $  $ 8,415 Inter-segment revenue   16  16 (16 )  Total $ 5,688 $ 2,111 $ 115 $ 517 $ 8,431 $ (16 ) $ 8,415 2017 KFC Pizza Hut All Other Segments Corporate and Unallocated (a) Combined Elimination Consolidated Revenues Revenue from external customers $ 5,066 $ 2,093 $ 106 $ 504 $ 7,769 $  $ 7,769 Inter-segment revenue        Total $ 5,066 $ 2,093 $ 106 $ 504 $ 7,769 $  $ 7,769 Operating Profit 2019 2018 2017 KFC (b) $ 949 $ 895 $ 802 Pizza Hut 114 97 157 All Other Segments (14 ) (12 ) (9 ) Unallocated revenues from transactions with franchisees and unconsolidated affiliates (c) 558 514 504 Unallocated Other revenues 4 3  Unallocated expenses for transactions with franchisees and unconsolidated affiliates (c) (554 ) (512 ) (500 ) Unallocated Other operating costs and expenses (4 ) (2 )  Unallocated and corporate G&amp;A expenses (145 ) (128 ) (185 ) Unallocated Closures and impairment expense (d) (11 ) (12 )  Unallocated Other income (e) 4 98 9 Operating Profit 901 941 778 Interest income, net (a) 39 36 25 Investment gain (loss) (a) 63 (27 )  Income Before Income Taxes $ 1,003 $ 950 $ 803 Depreciation and Amortization 2019 2018 2017 KFC $ 290 $ 296 $ 265 Pizza Hut 120 129 126 All Other Segments 5 8 4 Corporate and Unallocated 13 12 14 $ 428 $ 445 $ 409 Impairment Charges 2019 2018 2017 KFC (f) $ 16 $ 14 $ 27 Pizza Hut (f) 20 26 31 All Other Segments (f) 2   Corporate and Unallocated (d) 11 12  $ 49 $ 52 $ 58 Capital Spending 2019 2018 2017 KFC $ 264 $ 292 $ 227 Pizza Hut 71 77 93 All Other Segments 10 6 2 Corporate and Unallocated 90 95 93 $ 435 $ 470 $ 415 Total Assets 2019 2018 KFC (g) $ 3,160 $ 1,745 Pizza Hut 950 558 All Other Segments 166 132 Corporate and Unallocated (h) 2,674 2,175 $ 6,950 $ 4,610 (a) Amounts have not been allocated to any segment for performance reporting purposes. (b) Includes equity income from investments in unconsolidated affiliates of $69 million, $65 million and $65 million in 2019, 2018 and 2017, respectively. (c) Primarily includes revenues and associated expenses of transactions with franchisee and unconsolidated affiliates derived from the Companys central procurement model whereby the Company centrally purchases all food and paper products from suppliers then sells and delivers to all restaurants, including franchisees and unconsolidated affiliates. Amounts have not been allocated to any segment for purposes of making operating decisions or assessing financial performance as the transactions are deemed corporate revenues and expenses in nature. (d) Includes impairment charges on intangible assets and goodwill attributable to the Daojia business in 2019 and 2018, respectively. See Note 5. ( e ) In 2018, the unallocated other income primarily includes gain from re-measurement of previously held equity interest in connection with the acquisition of Wuxi KFC. See Note 5. (f) Primarily includes store closure impairment charges, restaurant-level impairment charges resulting from our semi-annual impairment evaluation, and incremental restaurant-level impairment charges as a result of adopting ASC 842. (See Note 12). ( g ) Includes investments in unconsolidated affiliates. ( h ) Primarily includes cash and cash equivalents, short-term investments, inventories and investment in equity securities that are centrally managed.