Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Details)

v3.20.1
Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by operating activities $ 535 $ 344
Cash flows from investing activities    
Property, plant and equipment, net (317) (283)
Investments in subsidiaries 0 0
Return of capital 0  
Other 0 (1)
Net cash used in investing activities (317) (284)
Cash flows from financing activities    
Debt issuance and other financing costs (7) 0
Distributions to parent 0 0
Contributions from parent 0 0
Distributions to owners (330) (304)
Net cash used in financing activities (337) (304)
Net increase (decrease) in cash, cash equivalents and restricted cash (119) (244)
Cash, cash equivalents and restricted cash—beginning of period 1,962 1,541
Cash, cash equivalents and restricted cash—end of period 1,843 1,297
Parent Issuer [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by operating activities 490 404
Cash flows from investing activities    
Property, plant and equipment, net 0 0
Investments in subsidiaries (286) (218)
Return of capital 79  
Other   0
Net cash used in investing activities (207) (218)
Cash flows from financing activities    
Debt issuance and other financing costs 0  
Distributions to parent 0 0
Contributions from parent 0 0
Distributions to owners (330) (304)
Net cash used in financing activities (330) (304)
Net increase (decrease) in cash, cash equivalents and restricted cash (47) (118)
Cash, cash equivalents and restricted cash—beginning of period 1,778 779
Cash, cash equivalents and restricted cash—end of period 1,731 661
Guarantors [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by operating activities 521 364
Cash flows from investing activities    
Property, plant and equipment, net (24) (5)
Investments in subsidiaries (225) (164)
Return of capital 11  
Other   0
Net cash used in investing activities (238) (169)
Cash flows from financing activities    
Debt issuance and other financing costs 0  
Distributions to parent (568) (404)
Contributions from parent 285 218
Distributions to owners 0 0
Net cash used in financing activities (283) (186)
Net increase (decrease) in cash, cash equivalents and restricted cash 0 9
Cash, cash equivalents and restricted cash—beginning of period 3 6
Cash, cash equivalents and restricted cash—end of period 3 15
Non-Guarantors [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by operating activities 374 213
Cash flows from investing activities    
Property, plant and equipment, net (293) (280)
Investments in subsidiaries 0 0
Return of capital 0  
Other   (1)
Net cash used in investing activities (293) (281)
Cash flows from financing activities    
Debt issuance and other financing costs (7)  
Distributions to parent (371) (231)
Contributions from parent 225 164
Distributions to owners 0 0
Net cash used in financing activities (153) (67)
Net increase (decrease) in cash, cash equivalents and restricted cash (72) (135)
Cash, cash equivalents and restricted cash—beginning of period 181 756
Cash, cash equivalents and restricted cash—end of period 109 621
Eliminations [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by operating activities (850) (637)
Cash flows from investing activities    
Property, plant and equipment, net 0 2
Investments in subsidiaries 511 382
Return of capital (90)  
Other   0
Net cash used in investing activities 421 384
Cash flows from financing activities    
Debt issuance and other financing costs 0  
Distributions to parent 939 635
Contributions from parent (510) (382)
Distributions to owners 0 0
Net cash used in financing activities 429 253
Net increase (decrease) in cash, cash equivalents and restricted cash 0 0
Cash, cash equivalents and restricted cash—beginning of period 0 0
Cash, cash equivalents and restricted cash—end of period $ 0 $ 0