XML 169 R162.htm IDEA: XBRL DOCUMENT v3.8.0.1
Borrowings - Summary of Borrowings under Credit Facilities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year $ 1,692.9    
Variable rate with exposure to repricing (six months or less) 933.6 $ 846.5  
Loans advanced 779.7 1,298.7 [1] $ 506.0 [1]
Profit on buy-back of notes 0.0 (17.7) 0.0
Repayments 695.5 1,413.2 [1] 594.3 [1]
Balance at end of the year 1,781.5 1,692.9  
Undrawn borrowing facilities committed 1,452.7 979.0  
Uncommitted 17.1 56.6  
Total undrawn borrowing facilities 1,469.8 1,035.6  
Within one year [member]      
Disclosure of detailed information about borrowings [line items]      
Undrawn borrowing facilities committed 39.7 93.0  
Later Than One Year And Not Later Than Two Years [member]      
Disclosure of detailed information about borrowings [line items]      
Undrawn borrowing facilities committed 0.0 106.9  
Later Than Two Years And Not Later Than Three Years [member]      
Disclosure of detailed information about borrowings [line items]      
Undrawn borrowing facilities committed 863.0 81.5  
Later Than Three Years and Not Later Than Five Years [member]      
Disclosure of detailed information about borrowings [line items]      
Undrawn borrowing facilities committed 550.0 697.6  
US Dollars [member]      
Disclosure of detailed information about borrowings [line items]      
Borrowing denominated in currencies 1,356.4 1,631.9  
Australia, Dollars [member]      
Disclosure of detailed information about borrowings [line items]      
Borrowing denominated in currencies 231.5 0.0  
Rand [member]      
Disclosure of detailed information about borrowings [line items]      
Borrowing denominated in currencies 193.6 61.0  
US $1 Billion Notes [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 846.4 992.6  
Buy-back of US$200 million notes 0.0 (129.9)  
Profit on buy-back of notes 0.0 (17.7)  
Unwinding of transaction costs 1.5 1.4  
Balance at end of the year 847.9 846.4 992.6
Fixed rate with no exposure to repricing (US$1 billion notes issue) 847.9 846.4  
US $150 Million Revolving Senior Secured Credit Facility [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 82.0 42.0  
Loans advanced 0.0 40.0  
Repayments (82.0) 0.0  
Balance at end of the year 0.0 82.0 42.0
US$150 million revolving senior secured credit facility - new [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 0.0 0.0  
Loans advanced 83.5 0.0  
Balance at end of the year 83.5 0.0 0.0
US$1,290 Million Term Loan and Revolving Credit Facilities [Member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 658.5 0.0  
Loans advanced 73.5 707.5  
Repayments (352.0) (49.0)  
Balance at end of the year 380.0 658.5 0.0
US$70 million revolving senior secured credit facility [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 45.0 45.0  
Repayments (45.0) 0.0  
Balance at end of the year 0.0 45.0 45.0
US$100 million revolving senior secured credit facility [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 0.0 0.0  
Loans advanced 45.0 0.0  
Balance at end of the year 45.0 0.0 0.0
A $500 million syndicated revolving credit facility [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 0.0 0.0  
Loans advanced 236.6 0.0  
Translation adjustment (5.1) 0.0  
Balance at end of the year 231.5 0.0 0.0
US$1,510 Million Term Loan and Revolving Credit Facilities [Member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 0.0 724.0  
Loans advanced 0.0 174.0  
Repayments 0.0 (898.0)  
Balance at end of the year 0.0 0.0 724.0
Short-term Rand Uncommitted Credit Facilities [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 61.0 16.7  
Loans advanced 262.6 356.4  
Repayments (216.5) (315.0)  
Translation adjustment 7.0 2.9  
Balance at end of the year 114.1 61.0 16.7
R 1,500 Million Nedbank Revolving Credit Facility [member]      
Disclosure of detailed information about borrowings [line items]      
Balance at beginning of the year 0.0 0.0  
Loans advanced 78.5 20.8  
Repayments 0.0 (21.3)  
Translation adjustment 1.0 0.5  
Balance at end of the year $ 79.5 $ 0.0 $ 0.0
[1] The restatement is as a result of the discontinued operations.