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Fair Value Measurements - Financial Instruments at Fair Value, Excluding Derivative Financial Instruments and Contingent Consideration (Detail) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Fair Value |  |  |
Financial assets: |  |  |
Investments |  | $ 22 | $ 25
Other |  | 22 | 21
Total financial assets |  | 44 | 46
Financial liabilities: |  |  |
Long-term debt | [1] | 13,114 | 10,892
Deferred credits and other liabilities |  | 122 | 121
Total financial liabilities |  | 13,236 | 11,013
Carrying Value |  |  |
Financial assets: |  |  |
Investments |  | 2 | 2
Other |  | 22 | 21
Total financial assets |  | 24 | 23
Financial liabilities: |  |  |
Long-term debt | [1] | 12,350 | 10,297
Deferred credits and other liabilities |  | 110 | 109
Total financial liabilities |  | $ 12,460 | $ 10,406
[1] | Excludes capital leases and debt issuance costs, however, includes amount classified as debt due within one year.

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