v3.5.0.2
Condensed Consolidating Financial Statements Condensed Consolidating Statements of Cash Flows (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities $ 1,103 $ 770
Cash flows from investing activities:    
Increase in restricted cash (75) 11
Proceeds from Issuance Initial Public Offering (70)  
Proceeds for (Purchases of) Available for Sale Investments   (60)
Proceeds from term deposits and sales of available-for-sale investments   1,084
Capital expenditures and capitalized software development costs (157) (136)
Net cash provide by (used in) investing activities (302) 899
Cash flows from financing activities:    
Repayments of debt facilities and issuance costs for debt facilities (781) (918)
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises 0 (399)
Payments to Acquire Additional Interest in Subsidiaries 0 128
Payments Related to Tax Withholding for Share-based Compensation (48) (39)
Proceeds From (Payments For) Other Financing Activities, Condensed (45) (32)
Intercompany borrowing 0 0
Dividends to shareholders (205) (158)
Intercompany dividends 0  
Net cash used in financing activities (1,031) (1,635)
Effect of exchange rates on cash and cash equivalents (7) (8)
Net increase (decrease) in cash and cash equivalents (237) 26
Cash and cash equivalents, beginning of period 627 652
Cash and cash equivalents, end of period 390  
Payments for Loans to Subsidiaries and Affiliates 0 0
Guarantor Subsidiaries [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 59 (38)
Cash flows from investing activities:    
Increase in restricted cash 0 0
Proceeds from Issuance Initial Public Offering 0  
Proceeds for (Purchases of) Available for Sale Investments   0
Proceeds from term deposits and sales of available-for-sale investments   1,084
Capital expenditures and capitalized software development costs 0 0
Net cash provide by (used in) investing activities (1,943) 779
Cash flows from financing activities:    
Repayments of debt facilities and issuance costs for debt facilities (1) (1,029)
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises   0
Payments to Acquire Additional Interest in Subsidiaries   0
Proceeds From (Payments For) Other Financing Activities, Condensed 0 0
Intercompany borrowing 1,885 283
Dividends to shareholders 0 0
Intercompany dividends 0  
Net cash used in financing activities 1,884 (746)
Effect of exchange rates on cash and cash equivalents 0 0
Net increase (decrease) in cash and cash equivalents 0 (5)
Cash and cash equivalents, beginning of period 0 5
Cash and cash equivalents, end of period 0  
Payments for Loans to Subsidiaries and Affiliates 1,943 305
Parent Company [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities (40) (25)
Cash flows from investing activities:    
Increase in restricted cash 0 0
Proceeds from Issuance Initial Public Offering 0  
Proceeds for (Purchases of) Available for Sale Investments   0
Proceeds from term deposits and sales of available-for-sale investments   0
Capital expenditures and capitalized software development costs 0 0
Net cash provide by (used in) investing activities (91) 0
Cash flows from financing activities:    
Repayments of debt facilities and issuance costs for debt facilities (780) 111
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises   (399)
Payments to Acquire Additional Interest in Subsidiaries   0
Proceeds From (Payments For) Other Financing Activities, Condensed (35) (29)
Intercompany borrowing 1,152 495
Dividends to shareholders (205) (158)
Intercompany dividends 0  
Net cash used in financing activities 132 20
Effect of exchange rates on cash and cash equivalents 0 0
Net increase (decrease) in cash and cash equivalents 1 (5)
Cash and cash equivalents, beginning of period 1 6
Cash and cash equivalents, end of period 2  
Payments for Loans to Subsidiaries and Affiliates 91 0
Non-Guarantor Subsidiaries [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 1,149 845
Cash flows from investing activities:    
Increase in restricted cash (75) 11
Proceeds from Issuance Initial Public Offering (70)  
Proceeds for (Purchases of) Available for Sale Investments   (60)
Proceeds from term deposits and sales of available-for-sale investments   0
Capital expenditures and capitalized software development costs (157) (136)
Net cash provide by (used in) investing activities (1,856) (986)
Cash flows from financing activities:    
Repayments of debt facilities and issuance costs for debt facilities 0 0
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises   0
Payments to Acquire Additional Interest in Subsidiaries   128
Proceeds From (Payments For) Other Financing Activities, Condensed (10) (15)
Intercompany borrowing 551 328
Dividends to shareholders 0 0
Intercompany dividends (65)  
Net cash used in financing activities 476 185
Effect of exchange rates on cash and cash equivalents (7) (8)
Net increase (decrease) in cash and cash equivalents (238) 36
Cash and cash equivalents, beginning of period 626 641
Cash and cash equivalents, end of period 388  
Payments for Loans to Subsidiaries and Affiliates 1,554 801
Consolidation, Eliminations [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities (65) (12)
Cash flows from investing activities:    
Increase in restricted cash 0 0
Proceeds from Issuance Initial Public Offering 0  
Proceeds for (Purchases of) Available for Sale Investments   0
Proceeds from term deposits and sales of available-for-sale investments   0
Capital expenditures and capitalized software development costs 0 0
Net cash provide by (used in) investing activities 3,588 1,106
Cash flows from financing activities:    
Repayments of debt facilities and issuance costs for debt facilities 0 0
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises   0
Payments to Acquire Additional Interest in Subsidiaries   0
Proceeds From (Payments For) Other Financing Activities, Condensed 0 12
Intercompany borrowing (3,588) (1,106)
Dividends to shareholders 0 0
Intercompany dividends 65  
Net cash used in financing activities (3,523) (1,094)
Effect of exchange rates on cash and cash equivalents 0 0
Net increase (decrease) in cash and cash equivalents 0 0
Cash and cash equivalents, beginning of period 0 0
Cash and cash equivalents, end of period 0  
Payments for Loans to Subsidiaries and Affiliates $ (3,588) $ (1,106)