The amount of outstanding funds that the entity is obligated to repay.

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The fair value of financial assets. [Refer: At fair value [member]; Financial assets]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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The amount of financial liabilities at amortised cost. The amortised cost is the amount at which financial liabilities are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount. [Refer: Financial liabilities]

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The amount of non-derivative financial assets with fixed or determinable payments that are not quoted in an active market, other than: (a) those that the entity intends to sell immediately or in the near term, which shall be classified as held for trading, and those that the entity, upon initial recognition, designates as at fair value through profit or loss; (b) those that the entity, upon initial recognition, designates as available for sale; or (c) those for which the holder may not recover substantially all of its initial investment, other than because of credit deterioration, which shall be classified as available for sale. An interest acquired in a pool of assets that are not loans or receivables (for example, an interest in a mutual fund or a similar fund) is not a loan or receivable. [Refer: Derivative financial assets]

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The amount of liabilities of uncertain timing or amount.

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The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

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Deferred and contingent consideration payments.

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Financial assets at amortised cost and loans and other receivables.

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Financial assets measured at amortized cost.

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Financial assets measured at fair value.

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Financial liabilities at amortized cost.

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Loans and other receivables.

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Trade and other receivables excluding prepayments.

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Fair value measurement - Summary of Carrying Amounts and Fair Values of Financial Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financial assets
Equity securities	$ 116	$ 127
Derivatives	8
Financial assets measured at fair value	124	127
Deferred and contingent purchase consideration	(131)
Financial assets measured at amortised cost:
Cash and cash equivalents	704	168	$ 206
Loans and other receivables:
Other financial assets	145	117
Trade and other receivables, excluding prepayments	502	477
Financial assets at amortised cost and loans and other receivables	1,351	762
Financial assets	1,475	889
Financial liabilities measured at amortised cost:
Loans and other borrowings	(2,249)	(2,019)
Trade and other payables	(645)	(633)
Provisions	(27)	(8)
Financial liabilities at amortised cost	(2,921)	(2,660)
Financial Liabilities	(3,052)	(2,660)
GBP400m 3.875% bonds 2022 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(509)	(538)
GBP300m 3.75% bonds 2025 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(385)	(406)
GBP350m 2.125% bonds 2026 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(447)	(472)
EUR500m 2.125% bonds 2027 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(569)
Finance lease obligations [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(235)	(231)
Unsecured bank loans [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	0	(262)
Borrowings [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(104)	(110)
Fair value [member]
Financial assets
Equity securities	116	127
Derivatives	8
Financial assets measured at fair value	124	127
Deferred and contingent purchase consideration	(131)
Financial assets measured at amortised cost:
Cash and cash equivalents	704	168
Loans and other receivables:
Other financial assets	145	117
Trade and other receivables, excluding prepayments	502	477
Financial assets at amortised cost and loans and other receivables	1,351	762
Financial assets	1,475	889
Financial liabilities measured at amortised cost:
Trade and other payables	(645)	(633)
Provisions	(27)	(8)
Financial liabilities at amortised cost	(3,014)	(2,819)
Financial Liabilities	(3,145)	(2,819)
Fair value [member] \| GBP400m 3.875% bonds 2022 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(543)	(593)
Fair value [member] \| GBP300m 3.75% bonds 2025 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(399)	(441)
Fair value [member] \| GBP350m 2.125% bonds 2026 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(417)	(454)
Fair value [member] \| EUR500m 2.125% bonds 2027 [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(566)
Fair value [member] \| Finance lease obligations [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	(313)	(318)
Fair value [member] \| Unsecured bank loans [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	0	(262)
Fair value [member] \| Borrowings [member]
Financial liabilities measured at amortised cost:
Loans and other borrowings	$ (104)	$ (110)