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Equity - Schedule of Ordinary Shares Issued Upon Outstanding Options (Detail)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
yr
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 40,064
Weighted average exercise price $ 37.90
Weighted average remaining life Years | yr 5.89
Lower than $15.01 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 592
Weighted average exercise price $ 11.40
Weighted average remaining life Years | yr 7.85
Aggregate intrinsic value (in millions) | $ $ 0
Range of exercise prices, lower limit $ 15.01
Range of exercise prices, upper limit $ 15.01
$15.01 - $25.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 10,938
Weighted average exercise price $ 18.94
Weighted average remaining life Years | yr 8.13
Range of exercise prices, lower limit $ 15.01
Range of exercise prices, upper limit $ 25.00
$25.01 - $35.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 7,914
Weighted average exercise price $ 34.62
Weighted average remaining life Years | yr 7.16
Range of exercise prices, lower limit $ 25.01
Range of exercise prices, upper limit $ 35.00
$35.01 - $45.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 5,511
Weighted average exercise price $ 40.59
Weighted average remaining life Years | yr 2.49
Range of exercise prices, lower limit $ 35.01
Range of exercise prices, upper limit $ 45.00
$45.01 - $55.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 10,328
Weighted average exercise price $ 50.74
Weighted average remaining life Years | yr 4.53
Range of exercise prices, lower limit $ 45.01
Range of exercise prices, upper limit $ 55.00
$55.01 - $65.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Balance at end of period (in thousands) Number of shares | shares 4,781
Weighted average exercise price $ 59.20
Weighted average remaining life Years | yr 5.31
Aggregate intrinsic value (in millions) | $ $ 0
Range of exercise prices, lower limit $ 55.01
Range of exercise prices, upper limit $ 65.00