Financial risk management (Tables)

12 Months Ended

Dec. 31, 2017

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Summary of Interest and Foreign Exchange Risk Sensitivities

		2017 $m			2016 $m			2015 $m
Increase/(decrease) in profit before tax
Sterling: US dollar exchange rate	5¢ fall		4.0			5.2			4.8
Euro: US dollar exchange rate	5¢ fall		(2.1	)		(2.2	)		(1.9	)
US dollar interest rates	1% increase		(2.9	)		(1.8	)		(0.9	)
Sterling interest rates	1% increase		0.3			1.3			7.9
Decrease/(increase) in net liabilities
Sterling: US dollar exchange rate	5¢ fall		44.1			47.2			23.7
Euro: US dollar exchange rate	5¢ fall		(4.1	)		(5.5	)		(7.6	)

Summary of Undiscounted Contractual Cash Flows of Financial Liabilities

The following are the undiscounted contractual cash flows of financial liabilities, including interest payments:

	Less than 1 year $m		Between 1 and 2 years $m		Between 2 and 5 years $m		More than 5 years $m		Total $m
31 December 2017
Non-derivative financial liabilities:
Bank overdrafts		110		—		—		—		110
Unsecured bank loans		264		—		—		—		264
£400m 3.875% bonds 2022		21		21		601		—		643
£300m 3.75% bonds 2025		15		15		46		445		521
£350m 2.125% bonds 2026		10		10		30		510		560
Finance lease obligations		16		16		51		3,234		3,317
Trade and other payables, excluding deferred revenue		719		138		189		176		1,222
Provisions		3		5		—		—		8

	Less than 1 year $m		Between 1 and 2 years $m		Between 2 and 5 years $m		More than 5 years $m		Total $m
31 December 2016
Non-derivative financial liabilities:
Bank overdrafts		89		—		—		—		89
Unsecured bank loans		110		—		—		—		110
£400m 3.875% bonds 2022		19		19		57		510		605
£300m 3.75% bonds 2025		14		14		42		419		489
£350m 2.125% bonds 2026		9		9		28		473		519
Finance lease obligations		17		16		48		3,252		3,333
Trade and other payables, excluding deferred revenue		644		173		210		192		1,219
Provisions		3		5		—		—		8
Derivative financial liabilities:
Forward foreign exchange contracts		3		—		—		—		3

Summary of Financial Assets Represents Maximum Exposure to Credit Risk

The carrying amount of financial assets represents the maximum exposure to credit risk.

	Note		2017 $m		2016 $m
Cash and cash equivalents		17		168		206
Equity securities available-for-sale		15		127		156
Loans and receivables:
Other financial assets		15		117		112
Trade and other receivables, excluding prepayments		16		477		403
				889		877